The protagonists of the movie 47 Ronin UHD are samurais who lost their master. Becoming ronin, they take an oath to avenge their abuser. However, laws do not allow them to punish their master's killer, and any attempt to attack him will be stopped. The protagonists look for the right solution and conclude that the death must, in any case, be avenged by another murder. Warriors know that the death penalty awaits them for such an act, but they do not want to deviate from their principles. For a while the samurais decide to lay low so as not to raise any suspicions. Some warriors become merchants, others become monks, and some of them start to lead an unbridled life, creating a reputation for not being able to take revenge. As long as the killer loses his vigilance, feeling safe, and thinking that the former samurais are not going to strike, the protagonists are just waiting for the right moment to attack. Will the brave warriors be able to avenge their master's death and kill his murderer?