Thirtysomethings Anna and Hans have been a couple for several years now. They have become so symbiotic and inseparable in their relationship, that their friends just call them both "Hannas" (blending the names Hans and Anna). Their biggest passion is cooking, which offers some distraction from their everyday routine. Yet this changes when they meet sisters Nico and Kim. The siblings suffer from ADHD and mix up the static life of the Hannas. Both Anna and Hans start a secret affair with the sisters, and both experience a delightful rush of feelings seemingly lost in their romance. Alas, they don't know that Kim and Nico also share a peculiar connection, which will eventually lead to emotional blows below the belt.