Complex sentence: Once again, Louisa falls in love and the two marry, and the couple live an idyllic life on Pinky's run-down houseboat, which is shown through a film sequence spoofing big Hollywood musicals.
Split into simpler sentences: Once again, Louisa falls in love and the two marry. They live an idyllic life on Pinky's run-down houseboat, which is shown through a film sequence spoofing big Hollywood musicals.