健吾（竹野内豊饰）是个普通的水族馆员工，他原本有个幸福和睦的小家庭，最近却为了妹妹玛利亚（北乃きい饰）罹患重病而愁眉不展。除了要支付巨额的治疗费用，若不能早日找到匹配的肝脏，妹妹便有生命危险。健吾的未婚妻美奈子（板谷由夏…

After fighting in the Civil War, two Union Army buddies find themselves on opposite sides of the law with the post-war peace at risk.