Ditto

“We are dreaming of the same love right now.”

At a Seoul university in 2000, Ji-in (Yoo Ji-tae) finds an old ham radio and hears a voice from the same campus answering him. Her name is Yoon So-eun (Kim Ha-neul), and she says it is 1979. Kim Jeong-kwon gives them twenty years of silence and static between one dial and the other, and every night the signal might not come back.