Fourteen Year-old Rusty-james Idolizes His Elder Brother, The Motorcycle Boy, And Wants To Be Just Like Him. Once The Leader Of A Huge Street Gang, Motorcycle Boy Remains Calm, Even Laughs, In The Face Of Danger. He Is The Toughest Street-fighter Around And The Most Respected Guy On Their Side Of The River. Suddenly Rusty-james' Brother Changes, Becomes A Loner And Shuns Gangs And Fighting, Comparing Them To Rumblefish - Siamese Fighting Fish So Ferocious That They Attack Their Own Reflections In A Mirror. Rusty-james Is Torn Between Blind Adoration For His Brother And An Eagerness To Return To The Days Of Street Fights And Both Boys Rush Heedlessly Into Danger.