The story of Lassie begins with her birth in a petstore. She was raised here, but everytime she got bought by costumers, she ran back to the store. In the end, no one wanted her. One day, a young girl named Asuki is employeed at the petstore and she immidialy throws her love on Lassie. She takes the dog for walks, pet and feed her. On one of their daily walks, Asuki is being attacked by three guys who try to rape her. Lucky enough, the guys didn’t complete their goal because Lassie attacks them. Asuki is so gratefull for her rescue that she give Lassie a small pendent. She promise to come and pick up Lassie as soon as she can afford to keep a dog. A few months later Akusi calls the store, only to find out that Lassie has been sold. However, Akusi can’t buy her from the new owners since Lassie has run away from them. And thus, Lassie’s journey began.

Lassie is travelling through the mountains when she bumps into the American bulldog, Bull. Bull fights Lassie because f the human pendent she’s carrying around her neck. As they fight, the German Shepherd, Germaine enters and saves Lassie. However, he doesn’t help her further on, but tells her to take care of herself. Lassie continues her journey, but exhausted from that and the fight, she almost passes out in the nearby village. A young boy, Yakuji, finds her and takes her home for medical care. Lassie stays with him for awhile, but a few days later she sees Germaine beng hunted by Bull. She leaves the boy and fights Bull off. She then takes care of Germaine. He's badly wounded and Lassie realises that if she shall save him, he’ll need human care. She fetches Yakuji and he takes care of Germaine and gives him a new home.

Lassie then continues further down South. Here she meets the Shiba, Jiyomaru who has been forced from home by his master’s lover, Majigo. Lassie helps Jiyomaru re-unite with his owner and also with getting the evil Majigo out of Jiyomaru’s home. Alas, once more, Lassie says goodbye to a friend and continues her serach for Asuki. What she doesn’t know is that Jiyomaru’s owner, Sanosuke, has contacted the petstore Lassie originally came from. Asuki quickly leaves her possition at the job and arrives only to find out that Lassie is gone. However, Jiyomaru wants to repay Lassie, so he runs out in town to find her. He succed and Lassie is finally reunited with her true owner, Asuki.
(source: GingaSite.net)