A self-proclaimed angel decides to intervene with a boy’s love life, starting with a timer on a boy’s arm, which will count down every time the boy’s heart beats from interacting with his crush starting from 10. At 0, the boy will confess everything he is thinking at that moment. But it only starts there! The ‘angel’ has powers based on the number 10, and grand the boy the ability to stop time, make someone fall in love with him, learn who others like, and more.