Her name is Rebecca, and she's now six, almost six and a half. Her immune system is a little weak, but she's not going to let that stop her. She's going to prove to the world that she's not some little flea! While out hunting frogs in the rain one day, she catches Ernest, a strange outspoken microbe—just the kind of friend that comes in handy when parents get lost in their grown-up fights... An original youth series that combines lively artwork with an endearing story.

Life isn't easy for six-year-old Rebecca. With her parents at each other's throats, a big sister with her own worries, and an uncle who makes her take her medicine, it's hard for Rebecca to keep smiling. Especially since she's fallen sick, and her parents want to keep her inside all the time. But Rebecca has a solution to her problems: her microbe friend Ernest. He'll try to reconcile her parents while fighting off a new virus named Sam, who threatens to make Rebecca's health take a turn for the worse!

Rebecca is six and a half years old, and her parents have separated. For a bit of fresh air, she's spending her vacation in the countryside at Grandpa Bug's. It's a bit boring there, without much to do, though even Rebecca has to admit the outdoors are doing her some good. But why has her friend Ernest disappeared? Is he hiding? Luckily, Grandpa Bug's there in the meantime to take long walks and teach Rebecca about nature! He seems to know a lot of stuff that's good for her...

Rebecca's dad has a new house by the seaside, in the land of walking stones... He's promised to show them to Rebecca when she comes to see him on summer vacation, and his word is his honor! And while she's there, maybe Rebecca will be able to make a friend or two... It's hard to meet new people, but she'll try her best!

Now almost seven, Rebecca's feeling better and finally ready to return to school. Believe it or not, she's excited to go back. Her teacher always finds ways to make class fun, turning the place into a school of nonsense. But a zombie-virus, the dreaded flu, is wreaking havoc on the playground. Everyone is going to catch it! Their only hope is the most super microbe of all... Ernest!