Kyung-ah works as a caregiver and lives alone. The only one she can rely on is her daughter, Yeonsu, but it's hard to see her after her independence. Meanwhile, Yeonsu, who was suffering from his ex-boyfriend, argues with him again and heads home. After Yeonsu left, Kyung-ah receives a shocking message.
Chunhee, who is left alone after her parents died right after IMF crisis, has been living in her mother’s childhood house ever since then. She makes a living by peeling garlics, and saves some money for the treatment for hyperhidrosis. Everything was fine until she got struck by lightning. When she comes around and gets home, she encounters herself waiting for her, to be specific, her younger self.