María José has moved from home, a change that comes with her adolescence: the taste for boys, new feelings, insecurities, changes in the body ... and the farewell of Julio Pirata, with whom he shared part of his childhood and from whom She was in love without being reciprocated. María José writes a very long letter to this boy; With a mixture of sadness, joy and humor, he recounts experiences of his life before and after moving, before and after discovering his new body.