Merlí: Sapere Aude

The second semester begins in college. Biel wants to organize a debating league, Rai is distant and Oti is fed up with her life. Pol meets Axel, a handsome carpenter who works on the restoration of the auditorium.

Pol is very touched by the news he has received. He isolates himself from everyone and his grades get worse. Bolaño continues to recover from his alcohol addiction and try to influence the debating league.

After a few days absent, Pol returns to class somewhat more serene and finds a new job in a nightclub. There he meets Dino, the owner. To Bolaño's delight, his daughter Laura and Víctor argue and their emancipation seems more distant.

Biel doubts whether or not to accept Pol's help to organize the debating league together. Bolaño is ready to regain her lost friendship with Montoliu. Oti is attracted to a classmate. Pol discovers that he and Dino are not so different.

Thanks to Pol, Bolaño and Dino start to meet as friends to chat about life. In the faculty of philosophy they organize a night party and everyone drinks a lot. Pol ends up very hurt and wanting to be honest with someone.

Axel and Pol spend a weekend away that ends up getting complicated. Biel discovers that he has an admirer, Vicky defends Alfonso from criticism from her friends, and Rai becomes increasingly estranged from her fellow students.

Pol leads the group to resolve a conflict at the college, while trying to fix another one at the Satanassa bar. Bolaño accepts that he cannot control his daughter's life forever and Rai breaks unexpected news to his friends.

The long-awaited debate league is celebrated and Pol receives a last master lesson from Bolaño. Oti, Biel and Pol are determined to win the race. Pol sets out to follow in the wake of his beloved Merlí.