Hashimoto, a man of daily labor is bored with his normal life until he encounters a mysterious coin locker in the locker room where his life changes.

Locker Room was adapted into a short Japanese TV special titled Coin Laundry (コインランドリー) as a segment of Yonimo Kimyou na Monogatari Aki no Tokubetsu-hen that aired on November 14, 2020.