So the Colombian trailer was informative...
Spoiler:
41 years ago, the king of the planet VEGETA had a baby, who became famous as the saiyan prince VEGETA in the not so distant future, and who prided himself on his latent ability as the strongest warrior. At the same time, his loyal military right-hand man, PARAGUS, also had the pleasure of receiving a new life, BROLY, who enjoyed untapped potential even more than VEGETA. However, the jealous King VEGETA relegated the BROLY baby to a planet dark and distant inside a small space capsule. PARAGUS betrayed King VEGETA to go after his beloved son and found him on a stormy planet. Desperately, he lost his way back home, as the impact of the landing destroyed his ship, which meant that he and his son were left alone and abandoned for decades without any hope.Currently on earth, six of the Dragon Balls are stolen from BULMA's laboratory by the resurrected FREEZA, who wishes to fulfill his ambitions. Meanwhile, the FREEZA army patrol finds PARAGUS and BROLY in the far reaches of the galaxy and takes them to FREEZA, thus constituting a stronger battalion. Surprised by the highly trained combat power of BROLY, FREEZA waves the bloody shirt of PARAGUS and heads to the icy land where the Dragon Balls are detected. GOKU and VEGETA, as they hurry towards the icy land to recover the lost Dragon Balls, face again their permanent rival FREEZA and the formidable BROLY. The fatal battle is just beginning, but against the overwhelming power of BROLY that gradually evolves along the swing of the fight, GOKU and VEGETA will be forced to act defensively.