As Fede grows increasingly concerned for the health of Nico, the hamster at the center of his and Kevin's science project, Kevin's brother Leo's behavior becomes increasingly erratic.

As Mariana's family debates whether she should tell her story to the press, Jorge and his lawyer engage in some shameful celebration.

As Leo begs his girlfriend to come over, Kevin is eager to wrap up his science experiment in spite of his partner Fede's reservations.

As the press comes down on Judge Garavito, Ximena's former boyfriend comforts Nicolás. Meanwhile, Nicolás' real father seems, as always, to be up to no good.

When Kevin's parents go out and his sister neglects her babysitting duties, the tension between Kevin and his brother, Leo, comes to a head over Kevin and Fede's science project. Will their hamster survive? Will Fede and Kevin?

While Mariana's father visits her in the hospital, tensions flare between Nicolas' biological father and stepfather as well as Jorge and his ex.

The power struggle between Kevin and Leo continues as their parents attempt to go out for the evening, leaving their sister in charge.

When one of Judge Garavito's mentors reprimands her for her recent rulings, she appears determined to stick to her guns.

As Kevin and Fede struggle to come up with the specifics of their science project, Kevin's older brother Leo is determined to interfere at every turn.

Although the press is tough on Jorge, he refuses to answer questions. Enraged, Roberto and Alfonso team up to try to make sure he gets what he deserves.

The time has come to present their natural science project in front of their class, and Kevin and Fede have yet to even begin.

As Mister Martínez shares his outrage with the media, Nico's father tries to make a smooth transition back into his life.

During some sleepless nights, Kevin contemplates the complexity of the universe— as well as his relationship with his brother.

The families of Ximena and Mariana are outraged about Judge Garavito's leniency toward Jorge at the outset of his trial.

Jorge's trial kicks off with some unexpected remarks by Judge Garavito.

After ditching his accordion recital to play soccer, Kevin must face his father.

In the conclusion to her interview with the team at the radio show Tu Voz Estéreo [Your Stereo Voice], in the wake of some tragic events involving her friend Mariana and Mariana's boyfriend's mentally disturbed mother, Paola offers an update as to the fates of both.

In order to keep his spot on the soccer team, Kevin must quit his accordion lessons and simultaneously risk disappointing his father. What will he decide?

As Doris flees from the police, they enter her home to find a wounded Mariana and a chemical stench in the air.

Judge Garavito addresses the hearing, determined to act in accordance with the law and not cave in to external pressures. Meanwhile, Mariana receives positive news about her health.

Can Kevin pawn his accordion off on his brother Leo before he's forced to perform in public?

Doris discovers that the police are outside her home and attempts to flee with her son.

Mariana's father has a lot of questions regarding the trial of Jorge Castellanos, who, in turn, is assaulted by a group of journalists upon arrival to the hearing. Meanwhile, Nicolás' aunt receives an unexpected phone call.

Although the accordion is definitely not Kevin's cup of tea, he is terrified of quitting for fear of letting his father down.