Lan, who is devoted and beautiful, started living with her boyfriend. What bothers her a bit is an elderly man in his sixties who often appears in the shared area of her boyfriend's apartment building. This man doesn't respond to greetings and looks at Lan as if he wants to lick her, making him seem scary. One day when her boyfriend is out, she hears loud moaning from next door. To protect their happy life together, Lan gathers her courage and goes to complain, only to find the neighbor in his underwear…
