It happened at the Valero Gas Station on the corner of Blue Spring and Winchester Roads.
The clerk said at about 11:45 Wednesday night, two men came in and pointed their guns at the clerk, demanding money from the register. One robber fired a shot in the store.
Police are looking for two heavy-set males. One was wearing a red shirt and black pants, the other a black jacket and black pants. Both of the men were wearing masks.