First you do need a copy of Akira Kurosawa's Seven Samurai. Since this is an expensive DVD I suggest you rent it. The slip up is near the end of the movie, during the last battle. The bandits had 3 guns, the samurai stole two. They used all the ammo for those two (they only had one round for each) before the last battle. During this battle the bandits fire their LAST gun twice in about 10 seconds. This is a period film and the guns are all fuse lit like a cannon. These guns take a long time to load. The world record for preparing and loading one of these guns is 2 minutes! Most people take 8 minutes. And these bandits can apparently do it in 10 seconds. If you do get this movie don't bother looking for any other slip ups. There are none. That's what makes this slip up so major, Akira Kurosawa was fanatical about his movie and made sure there were no slip ups. But he missed this one.