Middle-aged A-San, who has been single for many years, finally feels his heart beating again. But he is hesitant in taking action and asking out Yu-lian. His best friend is someone who has always been on his side and has never abandoned him, but can’t take his celibacy anymore. This friend is his penis. His soft, flaccid penis turns into a human. He swears to God that he will turn his loser life around and get laid. So A-San and his penis duke it out for control of sense and sensibility.