The girl name April D. Rilakkuma finish her second year of high school and she is in summer break. All of her friends are on their summer vacation. She stay at home with her mom during the summer. One day, when she was watching something on YouTube on her IPad, she was transwarp into her IPad and she is in an anime world of Saints. April was thinking that how did she get here. When she walk through the hall way, she saw the fighting arena and saw two Saints battling each other. After that, there is power of evil wants to rule the world. The Pope wants to use the Gold Saint cloth called Sagittarius Gold Cloth because it is the most powerful cloth in the world. What will happen to the Saints? How can April get out of this place to go back to her own world?