Barely thirty years old, Yumiko is a Japanese of modest origin who no longer has a taste for existence. Indeed, she can not recover from the death of her husband, hit by a car. Devastated by this disappearance, she is, moreover, led to constantly cross Shiro Mishima, the person responsible for the accident. Full of guilt, he wanted to pay her a pension, so that she could live decently despite the death of her husband. Haunted by her memories, Yumiko decides to flee to her sister-in-law, not far from Lake Towada. To her surprise, she finds Mishima there. When he speaks to her, she gradually understands that she must be forgiven…