Reset (Chinese: 开端; pinyin: Kāiduān; lit. 'Beginning') is a 2022 Chinese time-travel whodunit television series based on a novel by Qidaojun directed by Sun Molong and Liu Hongyuan. It tells the story of a college student Li Shiqing (Zhao Jinmai) and a video game designer Xiao Heyun (Bai Jingting) who are trapped in a time loop on a soon-to-explode bus. The drama premiered on Tencent Video on January 11, 2022.

The show was a critical and commercial success. In September 2023, producer Hou Hongliang and writer Qidaojun announced an upcoming companion series titled Restart (开启).