Óscar and Teo get along, but they have their share of little arguments: who’s messing with the other’s stuff, how to spend the holiday, whether or not their mother got lost in time after finding a hidden wormhole—typical brotherly subjects. Their differences are only more pronounced among the other neighborhood kids. Teo’s out playing soccer, going to dances, and hanging out at the cinema, while Óscar’s more content sorting through their scientist mother’s notes looking for clues. Things reach a boiling point when a fight leads Teo to sneak out in 1989, only to return to their shared bedroom…in 2022.

Once they both settle from the shock of reuniting (Óscar finally understanding Teo’s disappearance, Teo in awe of his Óscar’s smartphone), they can focus on getting Teo back home. The problem? They’ll need to find a completely different wormhole to get him there. Luckily, Óscar is now a physicist. The brothers, together with some familiar faces from their (sometimes distant) past, must find their way to each other across timelines in order to set things right.