With her birthday coming up, Marlene is realizing there are certain social commitments she doesn't want to participate in. Mau and Ricky have been planning a surprise to celebrate, but the plan doesn't seem to be working as they expected. They also visit the studio to meet their producer and best friend. Once there, they work on their last song, "No Puede Ser". Ricky is anxious about his bachelor party and must decide who will be his best man. Later on, the whole family—except for Ricardo and Marlene—are preparing and decorating the yacht they've rented for the party. They're all convinced that Marlene suspects something. As the night falls, the family goes to Camilo and Evaluna's concert, where they sing "Índigo" for the first time and ask the audience to join them as they sing "Happy Birthday" to Marlene.