One Riot, One Ranger

Amidst a bank robbery in Dallas, Walker's partner is killed. While trying to solve this case, Walker finds out that the hold-up could have been only a test for a much bigger booty: simultaneously robbing four banks lying next to each other. No one believes him. After a bomb explodes in a distant bank, which has just gotten a valuable load, every officer runs to there. When the actual raid starts Walker must face the gang alone.