On the 11th day after the "Ten Days Game" ended, the survivors Lin Xia and Su Ye temporarily took shelter at the lighthouse base in the flooded city, trying to escape the organizers' tracking. By chance, they discovered a tracking chip implanted in the device, and at the same time found a map pointing to the downstream shelter and a bronze key engraved with the "0" mark. On the way, they encountered the half message "They are looking for 'Ember'" in the damaged communicator, the pursuit of the man in black, and the unknown identity of "Ember" (codename of the next game/key survivor), making the two realize that "Ten Days to End" is just the beginning. They must rush to the shelter amidst floods and pursuits, and unlock the secrets of the bronze key and "embers" in order to truly escape the circular trap set by the organizer.
