Best friends Mimmi and Rönkkö support each other unconditionally. They want to live adventurous lives, loaded with experiences and passion. Emma on the contrary has given her whole life to figure skating. Nothing gets between her and success. But when the girls meet, life opens whole new paths, and they all rocket in new directions. While Mimmi and Emma experience the earth moving effects of first love, Rönkkö is on a quest to find pleasure. Three Fridays is all it takes to turn their worlds upside down.

The life of Juulia, a Finnish parliamentarian, is suddenly turned upside down by the discovery of the betrayal by her husband Matias, a Protestant pastor, with the young Enni. After an initial moment of anger and desperation, Juulia realizes that she cannot leave him and she understands that sometimes it is possible to sacrifice a part of one's individual happiness for the good of the people you love. For this reason she suggests to Matias that they open their relationship, a choice that will lead her to meet Miska, a young non-binary, who is also her girlfriend, and to experiment with polyamory naturally and spontaneously, with all the consequences of the case, positive and negative.

Raised in a small town, Antti and Suvi meet at a house party and fall in love, start a band and move to the capital. The more successful the band is, the worse their relationship gets. Their relationship ends and the band breaks up. Suvi becomes internationally successful solo artist Summer Maple. When Antti meets the determined Elisa, who aspires to become a lawyer, there is the promise of a new direction in life. But Suvi and music won't leave him alone. One night, Antti's doorbell rings: Suvi has come to ask him to come with her to New York to record a new album.