Unfinished Return of Yu Man Hon was inspired by the real-life disappearance of Yu Man-hon, an autistic boy who crossed the Hong Kong-Shenzhen border in 2000 and was never found again. The film reimagines the return of Yu Man-hon as an enlightened spirit. It tells an abstract narrative in which Yu Man-hon returns to the material world, retrieving lost memories of his own disappearance in the process.