Forty-one years ago, King Vegeta ruled the Saiyan race with a balance of pride and fear. When he discovered a baby named Broly whose power potential eclipsed that of his own son, Prince Vegeta, he felt threatened. To protect his lineage's legacy, the King exiled the infant to the desolate, monster-infested planet Vampa. Driven by fury, Broly’s father, Paragus, defected and followed his son, vowing to one day use the boy's burgeoning power to exact revenge on the royal bloodline.
As Gogeta prepares a final, lethal blow, Chelye—a kind-hearted soldier who befriended Broly—uses the Dragon Balls to wish him back to the safety of Planet Vampa. The battle ends not with a death, but with a new beginning. Goku later visits Broly on his home planet, bringing supplies and expressing a wish to spar again as friends, famously asking Broly to call him "Kakarot". Dragon Ball Super: Broly (2018)
If you want to know more about the characters or the production, I can look up: The by Akira Toriyama Forty-one years ago, King Vegeta ruled the Saiyan