A graduation cruise is capsized by a tsunami, leaving Liam and his female classmates stranded on a deserted island. The Savage Era system appears, assigning survival professions and selecting a Tribe Chieftain. Liam is chosen as Chieftain, unlocking an SSS-rank Tribal Aura and an exclusive weapon. His companions awaken professions. News of other survivors in crisis comes through. A mysterious woman watches them from the reefs. The group must work together to survive.