Fifteen young students of varying ages experience an unusual occurrence while on a school sailing trip. They suddenly find themselves in an unfamiliar world where dinosaurs still exist. The group sets out on a perilous journey to return home, facing multiple obstacles such as communicating with talking dinosaurs, aligning with rebels and pirates, rescuing a princess, and interacting with primitive lifestyle-leading scientists. With the help of new friends, they evade dangerous situations, including encounters with soldiers, bandits, aggressive dinosaurs, and zealous priests. Unfortunately, a rift forms within the group due to the animosity between the two oldest boys and their untrustworthy scheme. As tension builds, unexpected love interests arise, and the students start to discover their unique abilities. These abilities prove to be valuable as long as the group cooperates. This cinematic adventure is loosely based on Jules Verne's 1888 novel, Deux ans De Vacances.