Valentina and Sebastião are two young men whose boss forces them to steal precious jewels through disguises. The mysterious man who submits them to such crimes is known as 'El Amo,' who uses death threats to convince them to obey his orders. After several days, they are wanted by the police and, although they hate each other, they plan to pretend to be siblings and take refuge in São Bartolomeu College, belonging to Augusto Ponce de León and Francisca Campos.