Zhe, an S-class ropesmith, codenamed "Abyss Observer", can sense empty "emotions". He was used to living alone until he met the woman known as "The Destined One".
Yixuan, the core weapon of the mysterious organization, has the same power as the Hollow sleeping in its body. Every "order" she gave shortened her life.
When the Ropemaker and the Destined meet in the abyss, the wheel of fate begins to turn. The missing rope maker, the out-of-control hole, the concealed truth - all clues point to the same answer: Yi Xuan is both the key to saving the world and the switch to destroy it.
Zhe doesn't want her to sacrifice.
For the first time, Yixuan wanted to live for himself.
In the deepest part of the Zero Hole, they must find a third way - to use their bond to rewrite the established ending.
