A smart woman named An, who remarried with a man running a company and was once the president's secretary. Even though it's just a stepmother relationship, she worries about her son who stays at home even after becoming an adult and takes good care of him. One day, An decides to give her son a massage to cheer him up. However, as she massages, she finds an unexpected large and firm erection growing under her hands, and unconsciously moistens it. The excited son then begs her to touch him...!
