Cheers: It's a Mad, Mad, Mad, Mad, Mad Bar (1993)

Synopsis
Roger Rees returns as Robin Colcord, the multimillionaire jailbird -- and former sweetheart of Rebecca (Kirstie Alley). Though Robin insists that he has left prison an impoverished man, Rebecca believes that he is merely feigning his destitution to test her love. Meanwhile, the gang goes on a wild treasure hunt to locate a stuffed money belt that Robin claims to have squirreled away somewhere in Cheers. ~ Hal Erickson, All Movie Guide