Martín (Zoe Berriatúa) is a teenager living in the San Blas district of Madrid. He is upset with his father Arturo (Imanol Arias) because he blames him for his mother's death. With the help of his girlfriend África (Elena Anaya), who will become his stepsister, he tries to get revenge on him.

Martín (Zoe Berriatúa) es un chico que vive en el barrio madrileño de San Blas. Está muy enfadado con su padre Arturo (Imanol Arias) porque le culpa de la sospechosa muerte de su madre. Con la ayuda de su novia África (Elena Anaya), que será su hermanastra, decide vengarse de él.