During a workout, Yin Jun finds himself transported back to Hong Kong in 1978. This is a time before the popular TV shows, blockbuster movies, and famous songs he knows. Hong Kong television dramas, films, and music haven't yet reached their peak. Classics are yet to become nostalgic, and prosperity hasn't faded. This is a time before heroes grow old and beauties lose their youth. It's a chance to relive his youth and experience a different life.