One winter morning, Hachi behaves strangely, but then follows Parker to the station with a ball, and, to Parker’s delight, fetches it for the first time. After they play for a while, Parker puts the ball in his pocket. Hachi barks and barks and watches the train leave. Parker is holding the ball when he suffers a fatal stroke in his classroom and dies. Hachi waits. At 9:30 p.m., Michael comes to get him. From his shed, Hachi watches the family. While Parker’s human friends and family gather at his funeral, Hachi goes to the station to wait.
Cate sells the house and moves away. Hachi goes to live with Andy and Michael and their baby, Ronnie. One day, he escapes and follows the train tracks to Bedridge. Andy and Michael find him and bring him home, but Andy realizes the dog is pining for Parker and opens the gate. He licks her hand and runs to the station.
Every day at 5 p.m., Hachi waits for his best friend. The hot dog seller, Jasjeet, and others feed him. After a reporter writes a story about him, people send cards and money to the station. Ken reads the piece and comes to town to help, only to learn how the community loves Hachi. Ken speaks to Hachi in Japanese: He too, misses his friend.