A man named Hal dies in a plane accident, and his girlfriend Kurumi loses the will to live. To open her heart and help her move on, a robot named Q01, designed to look and act like Hal, is sent to her house. Though reluctant at first, Kurumi slowly becomes fond of the robot Hal, as Robo Hal begins to uncover parts of Hal and Kurumi's past.
After a tragic plane accident, a robot is sent to a small Japanese town to help a person who just lost a loved one. While trying to heal a melancholic heart, the past of the couple is unearthed.