Three young boys obtain jobs working for an old farmer in Eastern Kansas. Their first assignment together is to haul a trailer full of cattle across an old, worn out bridge. They tag each other with the nicknames of Runt, Mule and Kid. Those nicknames become their identities forever.

Soon, they band together to take on the town bully. A rivalry develops that lasts for years. Their childhood experiences bond them together. They become closer than family. However, it comes with a high price.

As they grow older, the paths they take puts a strain on their relationships. What was once fun and games as kids becomes life and death as adults.