End of the 1970s in East Germany: Fred and Jonas are close friends. The 10-year-olds live near at the German-German frontier. After the mother from Jonas has made an exit application, the boys have to recognize that they are soon separated from each other. But they want to dig a tunnel to Australia to meet there themselves again. When Jonas should leave the country with his mother this night changes everything.
In the middle of the night, Miko wakes up terrified due to a terrible nightmare about him being haunted by zombie creatures, then he hurries up to his mother searching for safety. The mother calms him down to get back to sleep again, when he decides to challenge his nightmare till the end. There, he gets to know Zombriella, and creates a strong friendship that helps him to overcome his fear from zombies, which also enables him to overcome falling into his brother Steve pranks.
