A web-drama about 4 young adults who hate Christmas who meet by chance and spend the month of December together. They unexpectedly become a part of each others lives as Christmas nears.

Tells the romance story of a girl named Hye Ri. She goes to Gangwon Province on a graduation trip with her friends. There she meets a mysterious man Woo Hyuk who runs a guest house. She gets attracted and closer to him and decides to name him “the mermaid prince”.

Three lonely strangers meet at their department store jobs and find solace in each other's company while they explore connection and the nature of love.