"Following on from Assassin's Creed: Conspiracies, the secret struggle between Assassins and Templars hits the Vietnam War... Tomo is the youngest member of a Japanese cell of Assassins. While pursuing his mother's murderer, Tomo's investigation leads him to another Assassins cell in Switzerland. Here he connects his memories to those of Aleksei Gavrani, an Assassin employed by the CIA during the Cold War to take part in a top-secret project in Vietnam. These mysterious experiments could have ground-breaking ramifications for both Tomo and the Brotherhood..." -- (Source of summary not specified)