Physics or Chemistry - Season 1 (2008)

Irene is determined to resign, but a virus has prevented Clara from reading her resignation email. Ruth tells that Roque has smoked at a party, so Adolfo gives the talk about drugs. Irene organizes a talk about homosexuality due to the bullying suffered by Fer.

Blanca and Irene still have problems. They have started circulating pictures of Irene nude. Meanwhile, she stays with her old boyfriend. Ruth has remained an orphan, Clara offers to welcome her. Julio is still obsessed with the death of his brother. Everything leads to Gorka, but he refuses to talk.

Irene feels jealous of Isaac and Yoli. This begins to leave the classes without explanation. Isaac asks Irene to find out what happens to his GF. Julio is furious over the issue of his brother's death. Cova and Fer help him. Ruth wants to emancipate herself with her parents' insurance money.

Irene wants to return with Isaac, who is receptive, which annoys Mario and Yoli. Clara catches Gorka cheating Ruth, with whom she discusses and leaves her and she begins to try to recover it. Happy discovers that Olympia is pregnant. Cabano are still trying to be with Paula.

Blanca begins to doubt Mario when he discovers that Jonathan returns. Gorka crashes Cabano's car and gives little importance, causing him to get angry. Ruth returns with Gorka and Fer begins to doubt Julio's heterosexuality.