The craving for revenge can turn a human being into a beast. The force of will to avenge your nemesis is completely mind conquering.
Lay your eyes on the Empire of Assassins movie and you will come to terms with a man, who has lost everything in his life, his family primarily. In the quest for the prime suspect responsible for befalling such destruction on him, he sets on a mission to avenge the loss of his family. The major twist in the story comes, when that very man, unknowingly chases his real brother, who according to him is the one behind his irreversible ruination. This tug of war between the two brothers seems to be life-threatening for either of them, since none of them is ready to back out from this battle. The circumstances turn out to be worst when the closest friends of the two brothers deceive them.
But, nobody is able to put a halt to this war, which is initiated by one brother against another in oblivion that the two of them are related to each other by blood. What happens at the end? Which brother ultimately heaves a sigh of triumph? These popping-up questions obviously give you a good food for thought.