Sinopsis: Playful Kiss is a warm, bubbly drama about falling in love and growing up along the way. Oh Ha Ni, nicknamed "Noah's snail" by her father and friends for her ability to keep trying even though she isn't the brightest in the bunch, has one goal in mind: to capture the heart of school genius, Baek Seung Jo. After harboring an all-consuming crush for years, she finally gets up the courage to give him a letter confessing her feelings. Seung Jo, an icy perfectionist, coldly rejects her. When Ha Ni's house is destroyed by an earthquake, she and her father move in with an old family friend?none other than Seung Jo's father. Now, Ha Ni and Seung Jo must deal with the awkwardness of living under the same roof. Can one determined, warm-hearted high school girl melt the heart of this closed-off genius?