When Elpis, a bubble who spreads hope bubbles to those in need, draws the attention of Principal Zeus, he offers her the position of Spirit of Hope at Mount Olympus Academy--provided she shows she can do the job. He transforms Elpis into a human girl and sends her to live among the students.

Elpis quickly discovers that being girl is harder than she expected, especially when her new roommate, Apate, isn't exactly welcoming. But thanks to the friendly Goddess Girls and the artistic, sarcastic Moros, Elpis begins to enjoy herself...and dread becoming a bubble again! Can she impress Zeus and stay human or will Apate ruin everything with her trickery?