This animated series is about a family where parents never get bored. The focus is on two little girls who can't stand each other. However, after just a few minutes, they become insanely fond of each other. Marie is still a little girl, she's 7 years old, and Wendy, her older sister, is becoming a teenager. The sisters are not alike, and each has a very explosive character. In reality, they love each other, but sometimes it's hard for them to remember that even themselves.