After a year abroad, seventeen-year-old Alf returns to his Catholic boys' school, only to find that no longer relates to his mates, who are popular and athletic. He finds himself drawn to new classmate Oliver, but in an attempt to dispel rumours, Alf bonds with his old friends and ends up committing a crime to prove he still belongs.

During a birthday weekend at a summer house, a group of longtime friends gather to celebrate, laugh, and relive old memories. As the night unfolds, an unexpected moment shifts the emotional balance of the group, leaving one of them silently confronting an experience he does not fully understand. Al Día Siguiente (The Next Day) explores the fragile boundaries between friendship, masculinity, and unspoken harm. Set in the aftermath rather than the event itself, the film focuses on what lingers once the celebration ends — the doubt, the confusion, and the isolation that follow when pain is difficult to name. Through restrained storytelling and intimate performances, the film examines how silence can both protect and imprison, and what it means to face the day after everything has changed.