My Sassy Girl

Gyeon-Woo never expects a drunken stranger to change his life. He is a college student with little luck in dating. One night, he finds a young woman standing near a subway track. He pulls her back and later helps her after she gets drunk. She suddenly calls him her boyfriend, which leaves him in a strange situation. Gyeon-Woo takes her to a hotel, hoping she can rest safely. Instead, he is mistaken for her boyfriend. After that, the girl keeps calling him and pulling him into her life.
She is bold, moody, and often treats Gyeon-Woo like her personal helper. Still, he stays beside her when she is struggling with heartbreak. The girl is an aspiring writer and often shares strange stories with him. Gyeon-Woo plays along, even when her behavior becomes difficult. They go on unusual dates, survive a hostage situation, and slowly grow closer. She also starts showing a softer side around him. Their relationship becomes serious, but her family does not approve. Gyeon-Woo eventually meets another man she plans to date. Instead of getting angry, he gives him ten rules for keeping her happy.
They finally admit how much they mean to each other. They write letters about their feelings and place them inside a time capsule. They promise to meet again after two years. During that time, Gyeon-Woo learns that her painful behavior came from losing her first boyfriend. He had died before she met Gyeon-Woo, and she was still carrying that grief. Their meeting point brings another twist when destiny seems to connect them again. Years of confusion finally lead them toward each other. My Sassy Girl blends romance, comedy, heartbreak, and unexpected fate.