A year ago Ricardo (Santiago Segura) and Felipe (Leo Harlem), in charge of taking the children to a camp, stayed outside the train leaving the children inside. Clara (Paz Vega) no longer trusts them and this year she decides to take the children personally with the help of her friend Susana (Paz Padilla). However, now they will be the ones who, as a result of an accident, are separated from the children. Sequel to 'A full train. Destination Asturias'.