The OVA is based on the manga with the same title by Tanemura Arina published in Ribon magazine.
Kyoko Suomi is a princess and she has to reveal herself on her 16th birthday. But she does not like the idea because she wants to lead her normal life. Her father suggest that she still can lead to normal life if she can awaken her twin sister, Ui, so she can take her place as the princess.
However, Ui will not awaken until a clock under her bed is removed. To remove the clock, Kyoko needs twelve stones and the people to control them. Kyoko manages to gain control of the first stone found which allows her to manipulate time. Now Kyoko has to find the other stones along with the people who can control them...