11-year-old Persia has grown up alongside the animals on the Serengeti plains of Africa. Twins Riki and Gaku Muroi and their grandfather, Gouken, bring Persia to Japan with them, where she will live with a couple (who Persia calls Mama and Papa) that own a grocery store. During the flight to Japan, Persia finds herself in the "Lovely Dream" where she meets the Fairy Queen, who explains that the Lovely Dream is in danger and requests Persia's help. Giving Persia a magical headband (which can also summon a magical baton) that allows her to transform into a teenage girl, connecting her to the Lovely Dream and allowing her to use magic. She is sent with three kappa back into the regular world with the mission of collecting love energy to thaw the frozen Lovely Dream. If Persia fails her task of collecting love energy or if someone catches her using magic, Riki and Gaku will be transformed into women.

Haruki Nakano lives an average high school life, except for the fact that his mother is overseas and he shares an apartment with his four sisters. There's the oldest, Mutsuki, who has a bad habit of falling asleep in his bed, the junior high school student Yayoi, who hits him whenever something happens, and then the grade school twins, Uzuki and Satsuki, who love to play pranks on their older brother. Stuck in a house with four girls, Haruki has to deal with all sorts of trials. From going grocery shopping, watching scary movies, to kissing practice, life is never boring in Danchigai!

The anime follows a salaryman who has a chance meeting with a girl named Ai on the train. They begin to meet every Monday on the train, with the man serving as her bodyguard on the crowded commute while they chat. (Source: ANN)