The story of what happened to Anne Shirley before she was adopted.

Despite performing as an idol group for three years, Idolls! has failed to make its mark on the entertainment world, only boasting a meager three fans. While the girls are venting their frustrations, a small wooden statue in their room suddenly starts speaking to them and convinces them to book a venue that seats one hundred fans. The only problem is that their performance is in just nine days! Now in a race against time, the girls must prove themselves worthy of stardom or face the harsh reality of failure.

It is the year 4999 - mankind has long abandoned war in favor of intergalactic competition through athletic events. One of which is an all-female contest for the coveted Cosmo Beauty title. Akari Kanzaki has just entered the University Satellite in hopes of becoming the latest Cosmic Beauty - a title held by her mother long ago. On her first few days in the university, she meets new friends, encounters fierce rivals, and struggles to become the best of all the Battle Athletes. (Source: ANN)

Yuuta was 12-year-old boy, who had lost his father in the traffic accident one year ago. In the summer vacation, he visited a deserted dam deep in the mountains, where he had a good time with his father before. Suddenly a thunder storm occurred and he slipped on the ground. He lost consciousness and woke up to find a girl and an unfamiliar village. He time-traveled 30 years and reached a village, which sank at the bottom of the dam. This is Yuuta's precious memory of another summer vacation.