An erotic film about a naughty journey with a big-chested mother and a young, handsome, fresh son’s best friend. Mi-sook raised her son Tae-ho alone after being widowed early by her husband. Then there was a man who comforted her lonely heart, and he was none other than Hyeon-dong, her son’s best friend! For his son Tae-ho, who still doesn’t know anything about this, Mi-sook suggests that they go on a trip with her high school alumni, Se-ryeong and Eun-hye, and tries to carry on her dizzying relationship with Hyeon-dong. Se-ryeong and Eun-hye, who are waiting for Mi-sook and her party to arrive at the pension, started licking their lips as soon as they saw two young, handsome, fresh boys (Hyeon-dong and Tae-ho) that they had never seen for a long time. Se-ryeong thinks something through and proposes to Eun-hye that they rejuvenate themselves with these young men. Will their trip be able to end safely?