Here's the Giant summary of the Second book of the Series:

The second book starts off with Chakas waking up in a small hut, surrounded by several black skinned people (and I mean black). he was lying with a pure-black skinned women nursing him to health, he would remain laying there for a few days, before he was able to talk. after he first came to, it was just he and the woman in the room. He asked her questions about where he was, and who the people were. The men in the hut, they were the men, seeking to marry her. Where they were, well, she did not have much of an answer, but when he stepped outside, he saw, the ground meet the sky, but not on the top. the sides. The ground stretched up on either side of him, meeting each other at the top. It was then that he realized that he was on one of the great Halos, like the one that destroyed Charrum Hakkur. Soon he found out that he was not the only Human who had been shipped here from off planet (the village being born here.) but that the woman's Grandfather was not from here.

Before we advance, we here of this woman's identity, she is a women the same age of Chakas named Vinnerva, with midnight black skin, who had been born on the ring, she had her own Geae, but it was much different from an ancient human, one planted by a builder, and not the librarian. Her Grandfather, Gamalpar, was another human of her race, who had been brought to the ring when it had just been constructed. He did have a Geae like Chakas, and was himself from Erde-tyrenne. both of them were survivors, they told stories at night, and hunted during the day, but nothing prepared them for the journey they were about to undergo.

 Seeking answers, to get as far away from the palace of pain (an unknown building humans were repeatedly kidnapped and taken to) as they can, they decide to embark on a journey across the ring. along the way they stumbled upon the old city of the humans, before most of them were taken for testing at the palace of pain. Inside they found broken Forerunner ships, as it had appeared the Forerunners were fighting themselves, and every last one of them died. But yet, nothing knew that it was dead, every ship, suit, and piece of technology would suddenly snap on, try to re assemble itself, but shortly snap back off as they failed to come back to life. Chakas reported back to Gamalpar, and Vinnerva, and they decided to go around the city, in fear of anything left behind. suddenly Vinnerva stops and turns around, as she said "I want to go there." nothing more, as she started running in the unknown direction. The old man and Chakas catch up to her, ad stop her right before she dives into a pit. as they look down, they see hundreds of humans at the bottom, rushing into a building at its base (the Palace of pain), with a massive creature hovering on a plate above it (whom we would find out to be the creature set loose from Charrum Hakkur, through subtle hints), as the two humans recognise this, they forcibly take Vinnerva away. I thought it was very interesting because they decided to use her as a compass, heading in the opposite direction of where she wanted to go. eventually they come to a stop when they meet a giant wall, made of bark and crossed thorns blocking the way. they stay there, and do there best to survive the night, eating berries, and taking turns sleeping, to watch over Vinnerva. Suddenly, in the night, the thorns retract into the trees, opening up a path into the forest ahead, in fear of the thorns closing again, the hurry to run through the jungle, and make it to the other side just as they close up again.

 When they break through to the other side of the Forrest, they are faced with a lake, stretching from side to side of the inner wall of the ring. The beach that they stand upon stretches just as far, but with Forerunner bodies strewn across it. They search the beach for a few hours until they find a boat, made of the same materials as the forest they came from. They then found more bark near the treeline and used it as oars to cross the lake, which they fear what might comes from the depths. As they continued across the lake, they spotted a Village, and started to paddle towards it. As they were about to reach it, the boat shook, and as they looked over into the clear lake, they could see the giant green mass pass beneath them, so they hurried to the dock, and entered the village. While they explored it, (no survivors) they heard something, almost as if they was a silent crying in tune with the slowly swaying structure, when the cry grows stronger and the Village starts to shake, when it abruptly stops. Chakas and Gamalpar explore the temple of which it had appeared to have come from, when they find the massive beast sitting in a cage. As it awoke, dim lights lit up across its body, and as it steps into the light, Chakas sees that it is not a massive creature, but several forerunners conjoined in a giant mass with arms and legs, each forerunner seemed to be fully awake, and horrified ant the monstrous form they had taken up. simultaneously, every mass on the creature said at once, "help, me" in separate sloppy tones, so that it sounded like a crowd, but it also sounded like one being. They fled from that place, leaving the monster behind, quickly rushing to the boat where Vinnerva waits, refusing to inform her as to what happened before continuing once more. As the make it to the opposite shoreline, several creature come up from the deep and show off their beauty around the three, reminding the characters that this ring was still a home to many amazing things.

As they tread through the jungle after reaching the shore, they gather a substantial amount of food before getting discovered by a giant ape during the middle of the night. As they soon found out the ape was accompanied by a Forerunner, a LifeWorker, and four brown-skinned humans, who interrogated them and took them back to his camp, but something was different about them, as Vinnerva and Chakas realized, they had no smell. Once at the camp, they settle in before dinner, at which, we see several different breeds of humans enter the dining hall, (127 as described by the LifeWorker), whom all eat, and report back to their own huts, leaving the 3 humans alone in their separate hut. While they were sleeping, Chakas is suddenly woken up by a shadowed mass hovering over him, as he sat up, he slowly recognized the figure, it was riser! Happy to see his old friend he greets him and asks him how he found them, but Riser is more focused on the camp they are in, no one has smells. As the LifeWorker approaches the hut, Riser hides and addresses Chakas not to alert the Forerunner of his presence. The Forerunner appears at the door, looks in, and asks Chakas to come with him, as he takes Chakas to a lab in the jungle, and has him stand in the center of it. But as machines close in around him, he starts to interrogate the Forerunner, and finds out that the Forerunner is trying to upload him into the one of the monitors, as he finds out was the fate of everyone else at this camp, and that no one but, him, the three other humans, and the ape were still truly alive.

As he rushes back to the hut, he finds Gamalpar and the rest of the live people outside the hut, Gamalpar was dying, as his health was finally failing him. The 'Forerunner' was upset by the fact that he was going to lose the Geae of the old man, and tries to force him to upload himself into the system, but as the power of the ring was failing, the Forerunner vanished, and the monitor that he was, or at least that he was uploaded to, replaced him, soon dimming and falling to the ground. They are once again, forced to enter the jungle, and continue their journey along the ring, riser no where to be found. Later on, they are rejoined by the small Florian and the two ancient spirits of Chakas and Riser speak to one another through their hosts' mouths. They shared their knowledge on the final battle of the war, who they were (finding out that Chakas's was the leader of the last army, and that Riser's was the first to lose a battle.), and what they thought the Forerunners were doing, not much was learned. Afterwards, Riser decided to tell his story as he crossed the ring.

He had first landed with 3 Forerunners, one locked in his suit, and the rest of them free. As the journey through the desert in which they were stranded, the suits started to squeeze in on them, and they quickly shed them, the locked on, not so lucky, as he was crushed within his suit. once they reached the end of the desert, a black pillar raised from the center of it, dispersing spores into the atmosphere, once the three reached cover, they decided to sleep. When Riser awoke, he found the two Forerunners bonded together into one being, so he ran, and found the camp, in which he waited for Chakas to appear.

After sharing Riser's story with the group, they continued on until a group of humans on a transport found them. with little other choice, the group got onto the transport and were taken deep into the rings to the rest of the humans with Mendicate Bias the AI left on the planet to converse with the gravemind that was the last Precurser. Who informs them that the ring is going to collide with a planet unless they re-position it so that the planet passes through the ring. So Chakas agrees to sacrifice his life to pilot the ring around the planet. Just before they succeed a fleet appears around the ring, led by Bornstellar Diadact, and the Diadact. The Diadact comes on board to save the ring when he discovers Chakas mortally wounded piloting the ring, he takes over the process, and talks to Chakas. After realizing that the process would not affect his thought, Chakas agrees to be uploaded into a monitor, and during that process, is taken with the Diadact to converse with the Precursor.

They quickly find out that the Flood was not a disease, but a test, to see if a species was truly able to take up the mantle, of which the Forerunners were not able. And that the Flood and Precursor were not different, hinting that those afflicted by the flood slowly become one as a Precursor, and that is how they have returned. At the end of the conversation, the Diadact activates a reverse stasis on the chamber the Precursor was held within, aging the being billions of years in mere seconds, instantly disintegrating the Precursor.

And then the Story ends, as we now see back in present day, with Chakas finishing his tale, in the body of 343 guilty spark. The humans who interrogated the device no longer have a use for the Monitor, and so they power it down and launch it into space. Little did they know that Chakas had uploaded himself to the ship, destroyed the AI, announcing that the Librarian was still alive, before putting the entire crew to sleep, and starting the ships journey to her current location.

Honestly, I loved this book and this was just the summary, do I recommend reading it, heck yeah I do 9/10