Juulia is a successful Member of the Parliament with a seemingly perfect marriage with her priest husband Matias. But when Juulia finds out Matias has had a year-long affair with Enni, she collapses. To save her marriage, Juulia invites Enni to be a part of their lives, and they start a polyamorous relationship. When Juulia explores the new rules, she falls in love with young Miska, who seems to be the most mature of the quartet. There is a lot of love in the relationships among the four, but no matter how hard they try, challenges seem to remain. Four Little Adults is a unique, modern story about the limits of love and grown-ups with growing pains.