Based on

Movies like Two Living, One Dead (1961)

Three Post Office employees are at work when the facility is held up. The robber kills the supervisor and knocks out another employee. The third one offers no resistance and survives unscathed. Afterwards he begins to wonder if his refusal to resist was a prudent move to preserve his family, or an act of cowardice, as many in the town believe. The resulting conflict begins to tear apart his family.