A dowdy antique dealer Norio finds a valuable tea cup of the most famous Japanese tea master Sen no Rikyu from the 16th century when searching inside a storehouse of a rich family. Norio deceives the homeowner Sasuke to get it for almost nothing, but it turns out that Sasuke is a mere house-sitter and the teacup is made by Sasuke himself.  

When Norio learns that Sasuke used to be a hopeful potter derailed by an antique authenticator Norio himself has a painful history against, the two decide to make the gamble of a lifetime against the authenticator they both have a score to settle with. Involving their wives and children, this act of fraud goes quite unexpectedly.