Mission: Impossible - Season 4 Episode 5 -

To thwart a counterfeiter who has printed enough currency to claim a pro-western democracy's entire gold reserve and thus topple the government, Paris must penetrate a lethal security system to substitute defective printing plates. Meanwhile Barney and Willy must subtly destroy a vault filled with currency and substitute easily detectable counterfeits made with the substituted plates to catch the counterfeiter red-handed.