Kanade has found two kindred spirits in her fellow school mates: Namiki, a cynical senior who's got a better grip on his future-viewing power; and Arou, Kanade's boyfriend, who has the opposite power of being able to see past events. Burned by childhood experience of being hated and feared because of their seer-like abilities, the trio has an unspoken pact to keep their secret from the rest of the world. But Kanade, the most proactive of the bunch, has gotten slightly overconfident about using her power to aid people covertly. Through a careless mistake, she reveals her hidden "ace" to the high school doctor, who has a hidden agenda of his own...