From the introduction: When a vile and mysterious plague strikes the city of H'vari, the Satrap orders a quarantine until the disease is cured. The PCs become trapped in a city in the throes of an epidemic. The players must venture into seedy tenements, walk among the dead and dying, uncover the unique symptoms and find a cure. Will the players solve the mystery behind the pestilence or will they themselves succumb to the coming plague... A four-hour adventure for 4th-7th level characters.