Xiao-jai (Gigi Leung) and Wen Tao (Ken Zhu) become friends -- and much more -- via their extended conversations on a radiophone. But they're shocked to discover that Wen lives in the future, and their only physical connection lies in the radiophones. An Asian riff on the American movie Frequency (with a little bit of Somewhere in Time thrown in for good measure), Sky of Love explores the idea of loving someone from a different time.