The series "Gavan Off-Duty" is a spin-off project that may or may not touch upon the everyday lives of various Galactic Federation Police members beyond what is depicted in the television series. These are their stories. We see the Gavans face trials and hardships on the job day and night, but what about when they are off duty? Little do they expect the epic events that may transpire in their downtime. This is not a record of their battles, but of the stories to be found in between.

故事舞台设定在深山的合租屋中。这里聚集着因现代社会压力过大而心力交瘁、或难以融入社会等怀揣种种故事的年轻人。作品描绘了背负过往创伤、在生活中感到艰难的男女们，虽笨拙却彼此扶持，逐渐重拾属于自己生活方式的姿态。

Recovering from a mental breakdown, Hina finds peace in a mountain share house where she meets Daigo, another resident searching for a fresh start, until the reappearance of her former supervisor forces her to confront her past.

Shinji Yagami (Yuma Nakayama) is a university student. He is easily frightened, due to seeing ghosts. He has feelings for Koyomi Nada (Haruka Shimazaki). To protect Koyomi Nada, Shinji and Koyomi joins the occult research group at their university. They try to solve a mystery of the haunted campus with members of their occult group.