Plot hook - sounds like a one shot convention game to me

[willplant]

In Budapest in early 1945, when the city was besieged by the Soviets, almost all the 2,500 animals in the zoo were killed or eaten. “For weeks,” Hastings writes, “a lion roamed the underground rail tunnels until it was captured by a Soviet tank force dispatched for the purpose.”

Read more: http://entertainment.time.com/2011/11/09/it-sucked-to-go-through-world-war-ii-inferno-will-remind-you-why/#ixzz1dDkLdB6V