Joo Eun and Tae Hoon are married and they have a 6-year-old daughter named Hee Soo. As working parents, they are busy, but enjoy happy times together. Their world suddenly changes when Hee Soo dies in a car accident. Joo Eun and Tae Hoon experience tremendous grief over their loss. With the help of VR program developer Joon Bum, Joo Eun and Tae Hoon meet Hee Soo again through virtual reality.