Cheer Up, Mr. Lee

Cheol-soo is physically fit and handsome, but he is mentally slow. He lives with his younger brother's family and works at their restaurant. One day, an older woman takes Cheol-soo to a nearby hospital. There, she gets Cheol-soo to take a blood test. The older woman is Cheol-soo’s ex-mother-in-law. Cheol-soo also meets Saet-byeol at the hospital. She is a young girl with leukemia and she is also his daughter. Later, Saet-byeol sneaks out of the hospital to take a trip to Daegu to get the autograph of famous baseball player. The autograph is a birthday present for her friend at the hospital. Cheol-soo happens to join Saet-byeol on her trip.