Watch Dragon Ball Super: Broly

Forty-one years ago, the Saiyan homeworld Planet Vegeta is ruled by King Cold's forces, who delegates command of the forces to his son Frieza. King Vegeta, leader of the Saiyans, believes his son Prince Vegeta is a prodigy destined to liberate their people and rule the universe. He learns of Broly, a Saiyan baby born with an abnormal power level that exceeds that of his son, and exiles Broly to the distant planet Vampa.