Zombriella.

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.