After her brother's suicide, Yoon-seul can barely face her mother, Hae-suk. Yoon-seul returns home after a long absence, only to be shocked by the chaotic, unrecognizable state of the house. Starved of appetite, obsessed with church affairs, and driving off impulsively in the dead of night, Hae-suk's life seems to be teetering on the edge. As Yoon=seul's anxiety deepens, she steps into her mother's fragile world, only to become entangled in an unforeseen accident– a fallout from a local tragedy— that transforms their standing in the community in a single, fateful night.