A woman, drawn by the allure of kissing, curiously tries to kiss a sleeping man. Starting with a kiss through a mask, it escalates to direct lip contact and even tongue kissing. Her actions cause the man to wake up. After that, they exchange kisses daily, with intimate moments like touching each other in a car. One day, they have full-on sex inside the car. Their relationship deepens through kissing—after getting off a train, they kiss in a park, then make love all night long in a hotel.