30-something Isabella visits her hometown to celebrate her dad's 60th birthday. There she reunites with her old friend Molly, who has now taken over the old gang--and even worse, is engaged to marry Isabella's ex, Simon.

Based upon the music of legendary Swedish artist Tomas Ledin, "En del av mitt hjärta" is a musical comedy about Isabella, a driven businesswoman and a real hotshot in the Stockholm finance world. When she returns to her small hometown to celebrate her father's 60th birthday, she feels like a winner compared to her former classmates: she's the only one who actually made something of herself. But her confidence i shaken when she realizes that her big teenage crush Simon is marrying her childhood friend Molly--and she isn't even invited to the wedding. She's used to always getting what she wants, so she examines the feelings she still has for Simon, with the reluctant help of her childhood friend Edwin--who is secretly in love with her.