Duggie Hammond was in the firing squad which executed the young lieutenant Hicks in World War I because of his cowardice. Since then the Hammonds and the Hicks have a unforgiving antagonism. Meanwhile the sons of the gunman, Colonel a. D. Henry Hammond, and his opponent Lionel Hicks, both sit in wheelchairs. A bomb in a toy car misses its goal, to kill Lionel, by a bit. But shortly after Henry is the victim of an attempted murder.