Akira Shimazaki (Takuya Kimura) lives with his middle school student son. He used to work as a bodyguard, but, due to an incident, he now works as a security guard at a construction site. The private security company where he works establishes a new bodyguard division. Hiding his past as a bodyguard, Akira Shimazaki begins work as a novice bodyguard.

One autumn afternoon, Sana and Asa meet again in the park where they used to play. Their time together, beginning with light-hearted conversation, sets in motion memories that had been frozen for ten years. A story of two people and two ‘confessions’, told through a single, fixed-angle shot.