"If you don't love me, I'll jump!" Hwi-bum, who has no luck, gets involved with Yeon-woo due to a group assignment. Besides his gloomy appearance, Yeonwoo's assignment was perfect, which is why Hwi-bum started taking care of Yeon-woo diligently for his grades. Whenever Hwi-bum was with Yeon-woo, he somehow felt that his luck was improving. Yeon-woo threatens Hwi-bum by jumping off the roof of a building if he does not love him... "You can't die, you bastard, it's our final work!"