How can someone’s perfect life be destroyed by three young people with different problems?

Working in a travel magazine with ample income. Having perfect parents who love him very much. Living his bachelor life happily. That is how you can describe Luhan’s life in words.

When Luhan was assigned to Paris in order to write an article about “Paris’ other side”, he met Kai, a law student with an adventurous side in him. He also ran into Seohyun, a talented, bright post-graduate with a dark past. Then, fate introduced Luhan to Yoona, a beautiful girl running from her beautiful life in Seoul.

Luhan, Kai, Seohyun and Yoona became a Korean quartet, working together to survive the hardships of Paris. Until one day, impulsive Kai gave an idea for an adventure of a lifetime: exploring Paris after the clock strikes midnight.

And from then, it all began. A tale of friendship, love and of course, “The City of Lights”.