What if at birth you were given a necklace that lead to your soul mate. The closer you were, the hotter it would get, the further you are, the colder it gets. Chanyeol was a known heart breaker but Baekhyun was a heart he couldn't break, because it was made of a half of Chanyeol's heart too.

Byun baekhyun is a 24 years old boy who work as a CEO in his own company. He has a boyfriend named Park chanyeol who is 4 years younger than him. Chanyeol and baekhyun has been lovers for 4 or 5 years.With 4 years age apart...what conflicts and problems will they face?