After moving in with new flatmates, Sharon finds an interesting substance that allows her to exercise at extreme levels; but not without a certain deadly side effect.
Sharon, recently moving in with two new flatmates, struggles to get enough energy to run and exercise efficiently. After discovering that her new friends have eaten her beloved secret jam donuts, one of them gets Sharon onto a not so legal substance that allows her to run like she would never believe, eventually becoming addicted. However, this might come at a lethal cost.