Hinako is a surf-loving college student who has just moved to a small seaside town. When a sudden fire breaks out at her apartment building, she is rescued by Minato, a handsome firefighter, and the two soon fall in love.

First-year high schooler Midori Asakusa loves anime so much, she insists that "concept is everything" in animation. While she spends her time doodling endless ideas and settings in her sketchbook, she hasn't taken the first step to creating anime, insisting that she can't do it alone. After Asakusa's money-loving best friend Sayaka Kanamori notices her genius and drive – and when it becomes clear that their classmate and charismatic fashion model Tsubame Mizusaki wants to be an animator – the energetic trio start an animation club. Together, the three aim to realize the "ultimate world" that exists in their minds, as they come to see the power that fiction and imagination have on their lives and the world around them.

随着恶魔觉醒，人类世界陷入混乱。性格温柔的男孩与恶魔合体，在神秘好友飞鸟了的指引下，卷入一场残酷、堕落的对抗邪恶之战。