This update features a new storyline, which begins with the GTA Online protagonists being reunited by Lester Crest and a new character, billionaire Avon Hertz. The protagonist, Lester, and Avon unite with government agents, including Agent 14 and Phoenicia Rackman. Avon believes that an unknown foreign entity is trying to start a war and would put San Andreas and the United States under a "doomsday scenario". The heist crew is involved in several missions that introduce new military-grade vehicles and weapons featured in the update.