Donghyun was a rich man who married a beautiful woman, and was blessed with 2 sons, Nichkhun and Minwoo. This family's happiness was short lived, however, as his wife turned hostile and broke up with him and Nichkhun, Donghyun's favourite older son moved out of the country to be with his girlfriend and for a better job. Devastated, he buried himself in work, forgetting that he still had someone who loved him. Minwoo on the other hand always felt neglected by his appa but loved him nonetheless. He always wanted to spend personal time with his appa, and he was finding a way to do so that will touch Donghyun's heart forever.