This film tells about the twists and turns of the lives of four lovers who must each overcome different fears and problems as they face the beginning of a new year. The four pairs consist of Ji Ho and Hyo Young, Jae Heon and Jin Ah, Yong Chan and Yao Lin, and Rae Hwan and Oh Wol.

A teenager is abducted and forced to tell the scariest tales she knows, leading to this anthology of four stories: a brother and sister are under siege while home alone; a killer escapes police custody mid-flight; step-sisters take plastic surgery to nightmarishly macabre extremes; a paramedic and mother standoff over her infected young daughter.

Soo-hyun comes across magical pills that allow him to go back and forth in time. 30 years to the past, young Soo-hyun meets future Soo-hyun and learns that his girlfriend will soon die because of him. In order to save her, the two Soo-hyuns try to change the past together, but a completely new and unexpected past is formed that leads to a new future.

Some may dream of, some may be afraid of, some may look forward to, and some may want to avoid THE NIGHT BEFORE MARRIAGE! 4 different couples disclose 4 different stories all about marriage.