Don't Worry, I'm a Ghost (Geokjeongma Seyo, Gwisinibnida)

The story about Moon Ki (Bong Tae Kyu) who was involved in an accident. When he wakes up, he does not remember his name, family members or where he lives. Along the way, he meets Yeon Hwa (Park Shin Hye), who introduces herself as a ghost. The two lives and stories are intertwined.