Fanletter Please tells the story of Han Kang-hee (Choi Soo-young), a top celebrity in South Korea, who faces her biggest crisis after accidentally receiving a fake fan letter sent by Bang Jeong-seok (Yoon Park) to his sick daughter in order to fulfill her wishes of getting a reply from her idol. It turns out that Bang Jeong-seok and Han Kang-hee were high school classmates in their senior year, till a misunderstanding on Kang-hee's part separated them.
