Rebecca is a six and a half year-old girl who is out of luck -- her parents are on the verge of divorce and she is always getting sick due to a weak immune system. One rainy day Rebecca's luck changes when she meets a magical microbe named Ernest, who becomes her best friend! Ernest is no regular germ -- he?s about the same height as Rebecca and he can talk. Can Rebecca keep her parents together with the help of her new friend? And can anyone really have a friend who belongs in a Petri dish?

Volume 1.My best friend is a germ -- Volume 2. Sam the Repulsive -- Volume 3. Grandpa Bug -- Volume 4. The land of walking stones -- Volume 5. The school of nonsense --