[6] Cheng Xiaoshi and Lu Guang run Moment of Time Photo Studio and accept requests from clients to relieve them of regrets.

The two work under the conditions that they have only 12 hours with one chance to travel in time and find what their client is searching for, while also leaving the events of the past unchanged.

Alternative versions of "Dive Back in Time", performed by bicaso (a vocal project by Sony Music Entertainment Japan) featuring Gen Kakon, and "OverThink", performed by bicaso featuring Eaeran, were also released and used in the Japanese dub version.

A later re-release, released on January 15, 2024 (2024-01-15), contained additional opening, ending, insert, and promotional songs.

[14] The series can be found on Bilibili or YouTube, starring Jiang Long as Cheng Xiaoshi and Bi Wenjun as Lu Guang.

Reviewing the first season for /Film, Rafael Motamayor praised the animation, music, and the series's ability to create tension.