Despite recently turning 17, the otherwise ordinary Yucie still has the body of a child. Having stopped growing past the age of 10, Yucie yearns to fully mature into an adult body. One day, she is chosen as a candidate for the title of "Platinum Princess," given once in a thousand years to whoever is worthy of the Eternal Tiara—a mysterious crown said to grant any wish. She's not alone either, as four other candidates also compete to have their own wishes granted by the crown. As a result, Yucie enrolls at the nearby Princess Academy in order to grow her heart and work towards becoming qualified for the Eternal Tiara. With her family, rivals, and even the principal of the academy there to lend a hand, will Yucie's much-desired wish finally come true?

At last, the Sanzou Party has arrived in India. In this foreign land, where the anomaly's influence runs rampant, their battles only heighten in their violence. And also awaiting them is their tragic fate from 500 years ago— What will they find at the end of their long and treacherous journey?

At the Border Defense Agency's headquarters, the B-Rank Wars are underway as each team fights intensely to secure a spot in the upcoming Away Mission. Though Osamu Mikumo and the rest of Tamakoma-2 have pulled through thus far, the final rounds will require them to push far beyond the limits of their current abilities. Taking in a talented new member, the squad begins to train and develop new strategies, but, amid these efforts, the team is shaken by a heated dispute—one that could jeopardize their ticket to the Neighbor's dimension.

The story takes place in Nikko city, Tochigi Prefecture, where girls aim for the top of the world through ice hockey. Local junior high school student Manaka and her younger sister Ayaka, whom she forcibly invited, hit the gate of first-hand experience with ice hockey, held by the Nikko-based team Dream Monkeys. The two are joined by their childhood friends Kaoruko and Mami. As the girls practice, they become fascinated with ice hockey and eventually join the team.