Mildred & her friends set off to visit Algernon at his riverside retreat. Mildred has been told to leave her cat behind, but when no one is looking she manages to sneak him in, hiding him on a boat. Meanwhile, Ethel and Drusilla discover the boat with Tabby & they untie the boat sending it down the river towards the rapids, completely unaware that Miss Hardbroom is also on board!