Sang Doo Lets Go To School

• Bi as Cha Sang-doo
• Gong Hyo Jin as Chae Eun-hwan
• Lee Dong Gun as Kang Min-suk
• Hong Soo Hyun as Han Se-ra

Sipnosis :
Growing up as the best of friends, Bi and Gong Hyo Jin make lots of lasting memories during their shortened high school years. When Gong's family goes into bankruptcy, debtors rush into their house to grab all of her family's belongings away. When somebody takes her fathers old record player that she really loves, Sangdoo goes after the guy. In a physical fight, the man falls off the bridge and enters a coma. Gong, not knowing this, runs away from the town. Bi goes to jail, returning to find out that his family and Gong have left him. Years later, he becomes a gigolo (with his uncle) in order to raise the hospital bills for his sick daughter (Hong claims that Bori is his daughter). Eventually, he meets his long-lost first-love, Gong as a high school math teacher. In an effort to never lose her again, he returns as a high school student (to finish his last years of high school) and gets placed in Gong's class. In numerous funny yet heart-touching moments, Sangdoo vows never to become a gigolo again. Yet, his past deeds have caught up with him, and he is soon sought after by the police. Gong's boyfriend, Lee Dong Gun, also does not want to let go of Gong. First love is something beautiful yet painful to these two lovers, who have reunited after ten years to find out that everything is not the same anymore.