Lucía, an executive of a high-tech company, has fought to get as far away from her humble origins as possible. On the day of her promotion, she is accused of espionage and fired.
Jose Ramon lives an ordinary life studying all day but everything changes when he discovers that his neighbor Javier, a handsome journalist, is in fact the famous superhero Titan. But having superpowers doesn't make Javier a good person: Javier/Titan is a mess as he refuses to grow up and take responsibility for his actions. Specially Javier struggles in the relationship with his girlfriend Lola, a brilliant journalist who suspects Javier is in fact Titan. Together the two neighbors and now friends navigate what means to be an adult while fighting supervillains, although at the end the only people they should save are themselves.