Ángela is 12 years old and has many hang-ups. She wishes she were part of Marta’s group of friends. They’re sexier, more switched-on, more daring, and more everything. Besides, Marta knows so much about sexuality. But what Ángela wants more than anything is to skip gym class, which she is terrified of. She doesn’t yet know that the exercise of climbing the rope is about to change her life.