Who is going to let their guard down ? Quite a art coach VS a muscular and trainer that is young? This couple tutoring starts between a pretty graphics coach versus young trainer and a muscular. Soo-kyeom and baek-seon are couple who have been living with one another for 20 years outside of loyalty. The two decide to find a hobby for some fun in their lives. Soo-kyeom decides to get fitness and Baek-seon makes the decision to get some good art tutoring. Oh dear, they meet graphics teacher Ji-won that is pretty and young and handsome personal trainer In-hak! The couple is more more curious in receiving activity than getting lessons. What's going to be the end of their course?