Night Light is a melodrama that depicts the intense and fierce fight which those greedy citizens, in the city that never sleeps, collide with each other in order to become the owner of the most splendid luring lights: money and power.
Park Gun Woo (Jin Goo), the handsome and smart successor of the large corporation Moojin goes to Japan, in order to pursue his dreams of a musician. In Japan he meets Seo Yi Kyung (Lee Yo Won) and falls in love with her. But after his heart was broken, he returns to Korea and starts to work at Moojin. 12 years later, he meets Seo Yi Kyung again, she is now a cold-blooded businesswoman with wealth and determination. At the same time he meets Lee Se Jin (Uee), who was born to a poor family, but is now highly ambitious. Seo Yi Kyung and Lee Se Jin strike up a challenge for success and love.
