Merlí

Merlí takes a position as a substitute philosophy teacher at his son Bruno's school after his ex-wife moves to Rome. As a single parent, he faces the difficulties of raising Bruno alone while also dealing with resistance from the school's traditional values due to his unorthodox teaching style.

Merlí encourages his students to participate in a literary contest through unorthodox methods, assists Ivan in overcoming social anxiety using philosophical approaches, and develops a close relationship with the mother of one of his students. Meanwhile, Bruno reveals a personal secret to his friend Tania.

Merlí gives Gerard advice about girls and becomes interested in Gerard's mother, Gina, after noticing they have a similar way of communicating. At the same time, he begins to make progress with Ivan and secretly takes a test copy, which eventually ends up in Bruno's possession.

Bruno's growing feelings for Pol begin to strain their friendship when he invites Pol over to study, leading to a complicated situation between them. Their high test scores draw suspicion of cheating, and Merlí becomes a suspect as well. The investigation into the incident threatens to jeopardize Merlí's position at the school.

Merlí challenges his students to question the values their parents have instilled in them, leading to tension with Joan's authoritarian father. At the same time, Ivan is forced out of his comfort zone, with unsettling consequences, and starts to grow closer to Gina.

Berta's personal struggles at home highlight her emotional needs and her desire for attention. Merlí and Gina have an argument after she learns about his relationship with Laia, and Merlí encourages Ivan to become more involved by suggesting that Bruno visit.

Bruno faces tension in his relationship with his father, Pol, but the two share an emotional and meaningful conversation. Following Pol's personal loss, Bruno offers support and helps rekindle optimism in their bond.

When a student sees Merlí and Gina kissing, tensions rise as Gerard becomes uneasy with the secrecy. Motivated by a viral video of Monica, Gerard chooses to publicly support her, while Ivan makes a significant personal or academic advancement.

Pol's birthday party leads to unexpected revelations, drawing Bruno and Pol closer while also exposing secrets from Gerard's past and Merlí's feelings for Gina. The celebration takes a turn when Joan is hospitalized due to excessive drinking.

Merlí reveals to Joan's parents that Joan has been using alcohol, sparking a family conflict that results in Joan being forced to leave home. He finds temporary shelter with Merlí. At the same time, Bruno attempts to reconnect with Pol, but his efforts are rejected, leading him to take out his frustration on his Spanish teacher.

Merlí offers support to Berta and Pol, especially encouraging Pol to work with Ivan. Bruno mocks Spanish teacher Santi, resulting in Santi's removal from class. A new student arrives and challenges the group's existing assumptions.

Merlí motivates his students to oppose the school's food donation campaign by drawing connections to corruption, prompting the principal to refer the matter to the review board. After a confrontation with Bruno regarding his mistreatment of Santi, Merlí faces a tragic personal loss.

Merlí goes against school rules to assist his students in paying tribute to a deceased classmate, putting his job in jeopardy. The students express their gratitude with a touching display of unity, while Ivan gets ready to return to the class.

The start of the new academic year is marked by the arrival of a provocative new female student, whose presence disrupts the existing dynamics at the school. At the same time, Merlí has a meaningful conversation with his father after Pol is unable to return due to pressures related to his family.

Merlí and the new school principal, Coralina, face initial difficulties due to their differing approaches. At the same time, Marc tries to help his younger brother deal with his behavioral and academic issues.

Joan turns to Merlí for advice on a romantic matter, only to end up providing him with meaningful insight in return. At the same time, the already tense relationship between Oliver and his mother continues to deteriorate.

Merlí lies to her mother, driven by feelings of shame, which strains their relationship. As tensions escalate, Gerard and Oksana grow closer, while Pol begins to develop feelings for his new boss and seeks support from Bruno.

Millán shares a long-kept secret with Glòria, strengthening their bond. At the same time, Tània demonstrates bravery by defending Berta during a tense incident in Coralina's classroom.

Pau faces consequences for throwing a pen at an unpopular teacher, and with Tània's help, Marc grows closer to her. Meanwhile, Pol and Miriam have a tense and emotional argument.

A substitute teacher arrives at the school and begins to influence students and staff in unexpected ways.

Mònica becomes increasingly frustrated with Joan's persistent jealousy. At the same time, Gerard begins to observe and uncover details about Oksana's routine during her afternoon activities. In a separate but significant development, Oliver confides a troubling memory to Merlí.

Three students play a prank on Coralina, leading to a punishment that unexpectedly turns into a valuable and rewarding experience for them and two other girls.

Coralina plants seeds of doubt in Ivan regarding his mother's true intentions, while simultaneously encouraging Bruno to move to Rome. Meanwhile, Joan tries to convince Mònica to change her mind about her decision.

Gina addresses Gerard regarding the difficulties in his relationship with Oksana. Pol apologizes to Ivan in an effort to repair their bond. Marc takes Pau to meet his mother at her job and makes a heartfelt request.

Joan starts to adopt a more self-centered approach, deviating from her typical role as a peacemaker. At the same time, Oliver shares something important with his parents, while Bruno gets ready to depart by bidding goodbye to his closest friends.

Pol becomes suspicious of his brother's hidden agenda as the students secretly throw a rowdy Christmas party at school, while Karma makes her way to Coralina.