The Love Boat: The Next Dame (2000)

Eve, Matias, Hanna, Topias, Lelu and Matleena are siblings. Hanna is married to Joachim who has an affair with Matleena, and Hanna herself was once lover of Albert. Albert is nowadays Matias' boyfriend but used to go out with Mikael, who slept with Leena. Leena is interested in Matias. Pete is Matleena's ex-lover and Albert's and Maria's cousin. Maria is involved with Kalle, who is Mikael's older brother. Maria also has an affair with Eve, who is shagging Kalle in secret.