Joshua Kampa is torn between two worlds - the Early Pleistocene Africa of his dreams and the 20th-century reality of his waking life.These worlds are transposed when a government experiment sends him over a million years back in time.Here, John builds a new life as part of a tribe of protohumans.But the reality of early Africa is much more challenging than his fantasies.With the landscape, the species, and John himself evolving, he reaches a temporal crossroads where he must decide whether the past or the future will be his present.