Amanda is preparing for a singing contest, dedicating every minute of her weekend to composing a song about "mollusks and existentialism”. Beto -her stepbrother- barges into the house with the intention of helping her, but instead, he creates a huge distraction by inviting Rami, a squash fanatic friend, who insists on celebrating his birthday at the house.

Leonardo, an optimistic travel agent, falls in love with Lucía, a mother trying to rebuild her life. But to become part of the family, he must first accomplish the most difficult task: winning the hearts of her two children.

Dr. Vlidi Mazo suffers from a terminal illness that ossifies his skin. Inspired by his own blood, a tooth, a fish scale and the skin of a grape, he sets out to create a cure to save himself.