While searching for her missing boyfriend, Maya arrives at a conservatory full of secrets.

After a message from Leo, Maya remains obsessed with investigating further. In a vision, Maya finds a new clue on Leo, while Rafa discovers how Connie's power works and becomes a dangerous threat.

While Maya investigates the strange key found in Leo's backpack, the kids try to return the metronome to the museum. But as everything starts to go wrong, they run out of their powers and must find another way out.

The kids spy on Gael; they're sure he's hiding something about Leo's disappearance. Tenoch doesn't get along with Pepe, his roommate. Paulina discovers her superpower. The kids follow Gael around the city and discover that he has a big secret.

Rafa enters the attic, stays by Connie's side, and gets on the kids' nerves. They, in turn, find Leo's notebook, which may be a key to understanding what's going on. At the same time, they try to find a way to find out what Gael is hiding.

The kids are close to finding out what happened to Leo when the real villain appears.