Diavolo, again disguised as the marquis, takes Stanlio and Ollio with him as his servants to an inn, where he plans to steal Rocburg's 500,000 francs, and where, as Marquis de San Marco, he again romances Lady Pamela. Stanlio and Ollio mistakenly capture Lord Rocburg, who has disguised himself as the marquis in an attempt to win back his wife. Diavolo's attempt to find the francs is, however, foiled after Stanlio drinks a sleeping potion meant for Rocburg. Diavolo's theft of Pamela's medallion is blamed on young Captain Lorenzo, the sweetheart of Zerlina, whose father, Matteo the innkeeper, has decreed that she is to marry a merchant named Francesco the next day. Lorenzo swears he will prove his innocence before Zerlina is forced to marry Francesco.