¿Quién es quién?

Its plot introduces the Fuentes, who are not exactly the picture-perfect family: work, school and routine have plunged them into a spiral of disconnect that is impossible to stop. However, everything changes when the youngest makes a wish for her ninth birthday. The next day, everyone in the family wakes up to discover they have switched bodies. The father is inside his wife, the girl is trapped in her grandmother's body, the teenage twins are not themselves. Chaos ensues over the house and everyone is left wondering, who is who? As they face crazy situations, the Fuentes must learn to put themselves in each other's shoes and trust each other in order to get back to normal. But will they be able to return to their original bodies and get their lives back?