A boy and his new dog struggle to adapt to their difficult new lives when they suffer bullying, cruelty and separation. When Tom gets a puppy he calls Spider, it changes both their lives. Tom finally has a special friend all of his own - which is just what he needs as he struggles with a difficult new school and trouble at home. And Spider has someone to love him. But the course of their love does not run entirely smoothly, as they embark on a gruelling journey of separation and reunion.