Lucía González, who spent 30 years, is single, has a job as a journalist who does not like, overweight and a younger sister, Irina Zabaleta, which is not only perfect but is about to marry. When announcing the news, her mother, Manucha makes a bet with Irina: If Lucy does not get lonely, overweight and dressed in black at the wedding, she pays the whole party. Lucia finds out, and there began his misadventures of 258 days to get "a normal boyfriend."