Lee Yoon-ho, a high school fighter, and studious Lee Min-ho are comically opposite brothers in a chaotic family including stock investor father, confident mom, money-loving grandpa, and defeated grandma.
Lee Yoon-ho (Jung Il-Woo), a motorcycle mania who engages in many fights at school and is known for his high kick, and Lee Min-ho (Kim Hye-Seong) who enjoys spending time on scale models and web blogs, are brothers born a year apart but attending the same class at school. These two portray completely opposite Korean teenage characters in a comical way. And of course, there's the rest of the family. Their father Jun-ha Lee (Jeong Jun-Ha), a full-time stock investor since being laid-off from work, nevertheless optimistic and reckless; their mother Park Hae Mi (Park Hae-Mi), an oriental medicine doctor and always overly confident; their grandfather Lee Soon Jae (Lee Sun-Jae), who loves money more than anything in the world; their grandmother Nah Mun Hee (Na Moon-Hee), who is always defeated by her daughter-in-law in ongoing status quarrels, are some of them. Their uncle Lee Min-yong (Kim Hye-Seong) is a 27-year-old single dad. After going through a premature marriage and early divorce, he enjoys his life back in the dating scene with his half-single and half-married status, while continuing to encounter emotionally-involved moments with his ex-wife Shin Ji at times. Smooth High Kick. is a situation comedy, which portrays the everyday lives of the main characters colliding with each other in a comical way. However, at a certain point, the surprising mysteries of their seemingly-normal surrounding characters begin to unravel one by one.
Season 1 Suk Ji Soo is a kindhearted and thoughtful woman caring about the harmony of her family. Jeong Mu Young struggles through many troubles and forgiveness within his family. He doesn't really like his father because he was born due to his father's affair with another woman. Ji Soo and Mu Young's family in this drama are complete opposites...her family is happy while his family is not. Eun Ha is a girl with a cheerful personality and perfect skin with no wrinkles. She thinks importantly of people's relationships and puts much effort into everything she does to make her family happy. The drama will be focusing on different family problems faced in modern day society. Season 2 Shin Se Kyung and Shin Shin Ae are a pair of sisters who came to work as maids in Foodstuff company President Lee Sun Jae's house after their debt-ridden father Shin Dal Ho runs away leaving them to fend for themselves. Due to the sisters living their lives in the mountains, everything in the city (outside world) are both new and curious for them especially for the younger sister, Shin Ae. Living together with President Lee is his daughter Lee Hyun Kyung, son-in-law Jung Bo Suk, doctor-to-be son Lee Ji Hun, grandson Jung Jun Hyuk who is a high school student and grand-daughter Jung Hae Ri' Jun Hyuk's school deen, Kim Ja Ok, is in love with President Lee who is widowed. Season 3 Ahn Nae Sang and Yoon Yoo Sun are middle aged husband and wife. When his business goes bankrupt, this couple moves in to her brother's house and the conflict starts.
