Sister Marina, a very unorthodox nun, is sent during the summer of 1994 to El Parral, a boarding school for boys threatened to be closed soon. Even though the kids welcome Marina with all kinds of pranks, they will, little by little, become something very close to the family they never had.

Carmen Machi
as Sister Marina

Paula Usero
as Sister Angelines

Doroftei Anis
as Sister Tatiana

Nuria González
as Mother Superior

Pablo Chiapella
as Rafa

Manolo Solo
as Vicar

Dairon Tallon
as Valdo

Adrián López
as Sebas

Pau Márquez
as Bichi

Adrián Marín
as Rachid