Ji Hae and Soo Kyung, university friends, both have a crush on Sang Min from their drama club. Soo Kyung asks Ji Hae to write a love letter to Sang Min, and Ji Hae expresses her own feelings in the letter, but in Soo Kyung's name. Sang Min falls for Soo Kyung, while Ji Hae, feeling guilty, tries to avoid him but continues to encounter him by chance.
Meanwhile, Ji Hae discovers
