A puppy was born in Akita Prefecture and sent as a gift to Professor Ueno of Tokyo University. Although professor's wife does not want keep the dog. Professor Ueno loves the puppy so much and names it Hachi. Professor goes to work by railways everyday. Hachi walks to Shibuya Station with Professor each morning and greets him in the evening, no matter what the weather is. One day, Professor Ueno has a read morestroke and passed away. His family sold the house and moved to another city, but Hachi keeps visiting the house and waiting at the Shibuya station, believing his master. Based on a true story of Hidesaburo Ueno and his Akita breed dog "Hachiko."