Xi Luhan is pretty contented by just staring and admiring Kim Jongin from afar. He doesn't have any plans to confess to the person he admires for 3 years. But then, his poor decision making skills and stupidity led him to a predicament he can't avoid, no matter what he will do.
He finds himself tangled in a mess with Oh Sehun, the best friend of the love of his life.
Or
Just when Luhan decided to take a plunge and confess to Kim Jongin, he accidentally confessed to Oh Sehun instead, who's more than willing to become his husband.