A mild-mannered cowboy is driven to violence by constant bullying and persecution. His partner, Blue Boss, is a steer hired out to cattle drives to lead the herds. When Blue Boss is killed, Willie Shay wants revenge and respect.
Johnny meets Willie Shay washing his pet steer Blue Boss in the river outside Laramie. Willie has trained Blue Boss to lead cattle herds while Willie sings to the herd to keep them calm. Trail bosses hire them to make trail drives easier. In Laramie Willie buys a sarsaparilla for himself and Blue Boss. Al Janaker makes fun of them and decides to try riding Blue Boss who bucks him off. For revenge Al shoots and kills Blue Boss. Willie declares his intent to kill Al who is fined $100 in damages. Al decides to go after Willie but Willie is faster killing Al who wounds Willie. Willie is cleared of charges and presented with a new calf Blue Boss 2.—Anonymous
A black cowboy named Willie Shay and his prized steer, Blue Boss come to town, and run afoul of a mean group of cowboys who don't understand why Willie treats Blue Boss like a person.