Crooked cop Kim Yongsun and charismatic gang leader Moon Byulyi have to work together to take down a new gang that threatens the safety of their city.

This is a 2yeon Single Parent au, Jeongyeon is the kindergarten teacher of Nayeon's son, Sungjae. "Teacher Teacher can I tell you a joke?" The little boy was already giggling and bouncing on the balls of his feet. "Sure Sungjae" Ms. Yoo leaned down and smiled fondly at the boy. "I love Yoo!" He said while putting his tiny hands in front of his mouth while laughing. His cheeky smile was contagious and Jeongyeon couldn't help but laugh. Nayeon put her face in her hands sighing with a gentle laugh, she doesn't know where her son gets his sense of humor but the blonde teacher seemed to be loving it. The teacher ruffled his hair "That was a good one" giving him a high five and Nayeon couldn't help but laugh out loud when she saw them dab at the same time. She felt her heart skip a beat as she watched the scene in front of her. Wait. Her heart skipped a beat. Why is she suddenly blushing when she notices Ms. Yoo looking at her intently with a smile? "Okay, well we gotta go" she rushed out, grabbing Sungjae's hand. "But mom" "We're gonna be late!"