Yayoi, Manami, and Kiyomi are 3 sisters with different characters, each hiding their complex from each other. One day, they take their mother on a trip to the hot springs. Having a common feeling that they do not want to lead a life like their mother, their complaints gradually escalate. What is supposed to be a happy family trip takes an unexpected turn when Kiyomi's boyfriend, Takahiro, appears. Adapted from the stage play "Okaasan ga Issho" (お母さんが一緒) by Peyounne Maki (ペヤンヌマキ).