Being homesick to a place you've never been to. Belle and Rosetta Grand have just lost their beloved father to an unknown fate. During his funeral, the girls find his fernweh list, a list of countries he wants to go to. All are crossed of, except one. Rosetta and Belle decided that when they are older, the will finish their fathers list. But when they do, the stumble across their dads best friend Micha they have only met when they were babies. Micha tells them about an ancient family secret and the real reason their father died. Hearing this information, the Grand twins set off on and adventure with Micha to finish the secret and get revenge on their dads murderer.