Broadcast: 2014-08-29 ~ 2014-10-11
This is a romantic comedy series about 4 boys at the ages of 9,19,29 and 39 who each confront different challenges in love and work at the cusp of a new decade in their lives.
Kang Dong Goo is a 9 years old. He is a child actor who got famous doing food commercials because of his healthy appetite. Dong Goo suddenly feels threatened when, for the first time ever, he loses a job to a new rival child actor. The precocious Dong Goo has also been secretly dating 8 years old child actress Jang Baek Ji for the past 2 years.
Kang Min Goo is 19 years old. He is a hot-tempered high school senior and judo athlete. Min Goo dreams of going to his dream college on a judo scholarship, which means giving his all to win a gold medal in his competitive matches. But an upset stomach during a semi-finals match causes him to lose and poop in his pants, and after that embarrassing episode, his judo ranking drops. Min-gu keeps running into a cute but mysterious girl named Han Soo-ah all over town, and he decides that they are fated to be together. Soo-ah is used to having the entire districts high school boys swooning over her, but Min-gu sincerity eventually wins her over. But Min Goo doesnt know that Soo-ah hiding some secrets: her real first name is the country bumpkin-sounding Bong-sook, she is two years older than he is and attends a cram school, and that she was once a legendary cussing, tough, party girl in high school.
Kang Jin Goo is 29 years old. Fashionable and smooth, he is a tour planner for a large vacation travel agency. Jin Goo has been carefree for most of his life, but he faces a rough patch as he turns 29 and starts having to reevaluate his whole future. He has a coworker, Ma Se Young, who is from a small town, is outspoken and rough around the edges but a loyal friend.
Koo Gwang Soo is 39 years old. He was once the brilliant PD of the Nation top live music program. But his fall from grace occurs when members of an indie band he cast drop their pants onstage and flashed the entire country during a live broadcast. Gwang Soo loses his position and gets shunted to another program, spending the rest of his professional life in obscurity. He is desperate to get married, but his workaholic ways leave him little time to date. Gwang Soo often thinks about the one who got away, his ex-girlfriend Joo Da In who suddenly broke up with him one day and left him heartbroken. When they met again, Da In is a single mother who life revolves around her young daughter.