Dragon Ball Z: The History of Trunks

In a desolate future where humanity teeters on the brink of extinction, Goku's demise from a heart virus sets off a chain of catastrophic events that seal his fate. Thirteen years later, Gohan, Goku's son and sole survivor of the battle against the Androids 17 and 18, finds himself on the cusp of despair as he trains Trunks, Vegeta's teenage son, to become strong enough to defeat their common enemies. As Trunks struggles to unlock his own potential, he embarks on a perilous journey through time to alter the course of history and save his father, Goku.