After a shipwreck, Lin Chen and a group of survivors are trapped on a deserted island. With a shortage of water, lack of food, and heavy rain pressing in, while others are still waiting for rescue, only a prompt pops up before his eyes—the system has been activated. Secure the shack, unlock reinforcement, upgrade, retake supplies, and claim survival gear. With each crisis weathered, Lin Chen can take away a reward, step by step building the leak-prone broken shack into the safest sanctuary on the whole island. But when a strange voice comes over the radio and surveillance traces appear near the camp, he gradually discovers that someone doesn't want them to leave the island alive.