18-year-old Kang Gyung-joon’s spirit suddenly ends up in the body of 30-year-old doctor Seo Yoon-jae, who is engaged to his high school teacher, Gil Da-ran. Things become even more complicated when Yoon-jae falls in love with another woman.
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Gong YooSeo Yoon-jae / Kang Kyung-joon
Lee Min-jungGil Da-ran
SuzyJang Ma-ri
Jang Hee-jinLee Se-young
Shin Won-hoKang Kyung-joon
Jang Hyun-sungKang Hyuk-soo
Koh Soo-heeLee Kyung-mi
Im Ji-eunKang Hee-soo
Ahn Suk-hwanGil Min-kyu
Baek Sung-hyunGil Choong-shik
Shin Ji-sooLee Ae-Kyung
Yoon Hae-youngLee Jung-Hye
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