Having lost his job and abandoned by his wife, Takashi moves in with his brother's family at their home, bringing along his young son, Shota. His brother Masashi and sister-in-law Aimi reluctantly agree to let them stay on the condition that Takashi finds work, but he shows no intention of seeking employment. Instead, he becomes increasingly obsessed with gambling. Meanwhile, Shota quietly observes his father's downward spiral with innocent eyes, trying to maintain a sense of normalcy in their unstable life.