Director: Vibeke Idsøe
Stars: Torbjörn T. Jensen, Jenny Skavlan, Benjamin Helstad, Kjersti Holmen

When your grandfather gets a kidney stone, you have two choices: You can stand idly by and let the thing runs its course, or you can go inside the old man's body and take on the kidney stone mano-a-mano. We'll give you one guess what choice young Simon makes.

The dutiful grandson teams up with white blood cell Mapster and Alveole, a gal who lives in the old man's lungs, to take down the internal intruder. They make quite a trio, but will they be able to defeat the kidney stone before it's too late?