Every summer reunion between twin brothers and their neighbor blossoms into unspoken love, until adulthood and a past tragedy change their lives forever.
Eun-soo is a housewife, who struggles to pay for her husband's medical expenses. He is terminally ill. Eun-soo becomes entangled in a bag of drugs with a teacher named Yi-kyeong. He is a mysterious figure. Eun-soo and Yi-kyeong are chased by veteran detective Tae-gu.