Stagecoach

From the introduction:

This is a live-action role-playing (LARP) scenario set in the Serenity/Firefly universe...I first ran it at GenCon Indy 2007. The original event description is as follows:

The Coronado is a high-speed armed transport, owned by the Companion's Guild and operated by Captain Frances Granger to protect their interests in the outer worlds. But in a time of crisis from Reaver attacks, she has agreed to take on priority passengers bound for Regina. But all is not as it seems. An event heavy on role-playing, with intrigue and tension. Fancy Old West or Chinese themed clothing suggested but not required.