Casi Feliz follows the story of Sebastian, a comedian and radio presenter, who faces a series of problems with his current adult life. He is in a difficult relationship with his ex-wife, where he, though separated, is still in love with her. The series follows his journey as he tries to find a way through his life, struggling with daily problems, personal insecurities, and kids, thus seeking happiness which seems to elude him in his "almost perfect" life.