One Million Years B.C.

In a prehistoric world, a member of the primitive Rock Tribe named Tumak faces exile following a violent altercation with his father. Forced to survive on his own, Tumak embarks on a perilous journey across a hostile landscape teeming with predatory creatures and natural hazards. His path leads him to encounter the more advanced and harmonious Shell Tribe, where he meets and develops a bond with Loana, one of the tribe members.

Tumak's presence introduces conflict within the Shell Tribe and draws the ire of his former tribe members, setting the stage for intense clashes. As Tumak navigates this new environment, he experiences personal growth and learns to adapt to different ways of life. The evolving dynamics between the tribes and the continuous threat from monstrous creatures culminate in a series of pivotal events that test the fortitude and unity of all involved.