After the Great Earthquake in Northeastern Japan, Mitsuo is sent to a mental hospital from the strain of grief from working to clear out the debris of the disaster. When he is released 3 years later, he feels a moment of happiness as he is welcomed back by his brother Yuta, his wife Yoko, their first daughter Chie, and their second daughter Itsuki, who has a down syndrome.The next day, Chie wishes to go to the amusement park, and Mitsuo takes Chie and Itsuki there. But these happy moments don&amp;#39;t last long, and the incident happens at the park. Chie dropped Itsuki on the concrete when Mitsuo took his eyes off of them. Yoko cannot accept Itsuki&#39;s death, madly questions Chie and Mitsuo. In this pressure, Chie lies that &amp;quot;Uncle Mitsuo dropped Itsuki.&amp;quot; As Yoko goes through a mental breakdown from the shock. Becoming full with regret day by day, Yoko accuses Yuta and questions if he felt relieved that Itsuki died. Hearing this fight between her parents, Chie&amp;#39;s heart was also slowly being ...　　After the Great Earthquake in Northeastern Japan, Mitsuo is sent to a mental hospital from the str