Three ferocious dogs keep a group of young people prisoners in the pool of a luxurious house they have snuck into, while neighbors gather at a nearby villa to celebrate the start of summer.

Eva is in a happy moment of her life with her new partner, Nazario, and his daughter Alicia. But an encounter with her ex, José, opens the door to complicated situations that will send her on a journey of fear that has terrible consequences for everyone. Nothing is what it seems.