Herman discovers he's the new lord of Munster Hall in England. The family sails to Britain, where they receive a tepid welcome from Lady Effigy and Freddie Munster, who throws tantrums because he wasn't named Lord Munster. An on-board romance had blossomed between Marilyn and Roger, but on land Marilyn discovers Roger's family holds a longstanding grudge against the Munsters.
Munster, Go Home! is a 1966 American comedy film based on the 1960s family sitcom The Munsters. It was directed by Earl Bellamy, who also directed a number of episodes in the series. The film was produced immediately after the television series completed filming its original run; it included the original cast with the exception of Marilyn. Marilyn was played by Debbie Watson, replacing Pat Priest from the series.