“Time is the longest distance between two places.” 
 

Baekhyun Byun doesn’t know how or why but he has travelled into the future. In his voyage to find a way back to his time he meets a futuristic girl and falls in love with her, but it is a one side love and she is with someone else. When he gets a device to take him back to his time, it malfunctions and goes back in time 90 years prior to his time and yet again meets a girl that helps him until his time travelling device is fully recharged, however, the girl falls in love with him. But he knows that if he changes the past then he may destroy or drastically change the world. What will he do? Who will he choose? Will he ever get back to his time?