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.

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.