When Montse goes to Barcelona for a summer English course, she brings a head full of false ideas and a heart full of dreams and love of life. Staying at his sister's, a hostess, free and unbiased, only serves to increase her confusion. Along with her ​​classmates, Nuria and Marimar, Montse is willing to lose her virginity and find guys to start on sex.

While a youth group led by Daniel causes the explosion of a truck loaded with materials to build a nuclear power plant, Laura accidentally kills his mistress, Judge. Both cases will cross.