Isi and Disi, who are not siblings and these are not their real names, were born and raised in the Madrid district of Leganés. Their aliases are the result of their unbridled passion for AC/DC which, as they have always heard, is pronounced "isidisi" in English. Although he is in his early thirties, Isi still lives with, and off, his father Eugenio, who is a heavy metal veteran and owns an equally heavy bar: La Campana del Infierno (Hell's Bell's). One day, while making the weekly delivery of cockles from his father's bar to the university, Isi meets the love of his life: Vane. Pretty, friendly and intelligent, she is the perfect girl. From then on his only goal will be to win her heart, with the not always valuable help of his loyal mate Disi. However, the task is not going to be easy and the two friends will get themselves into more than one mess.