Hibiki enjoys the finer things in life, and when it comes to food, she's downright indulgent. When it becomes clear she's getting chubby, she decides to better herself by joining a gym.
In her attempt to find a casual gym, she meets Akemi - a comrade-in-arms. Little does Hibiki know, Akemi has an ulterior motive.

What will this wonderful world of fitness have in store for Hibiki?