Solo is aided by tourist Bernie Oren (Glenn Corbett) in finding a black market auction in Hong Kong run by Mr. Cleveland (Gavin McLeod) that sells military secrets, including a microfilm in a rare coin. Oren is infatuated with Heavenly Cortello (Karen Sharpe), and hinders more than he helps Solo, while Illya tries to infiltrate the auction disguised as a Mongolian warlord.