After an air disaster, elite professional Lu Chen and the girl next door, Su Wan, are stranded on a deserted island. In the despair of trying to survive, strange footprints appear on the beach, murals in the forest conceal ominous signs of sacrifice, and a mysterious "Watcher" follows them like a shadow. When supplies mysteriously appear beside them, are they an unknown kindness or a trap meant to keep them penned in? In this perilous predicament, suspicion and dependence intertwine. Can the feelings growing between them help uncover the island's secrets and escape alive?
