Postman Pat, his black and white cat Jess, and friends enjoy a great big boat adventure. Pat has a special package to help Ted fix his boat. Pat gets the part over to Ted, and lends a hand, when Reverend Timms appears and, in a moment of clumsiness, casts them off from shore! Without a working engine, they're adrift on the lake, and it will take a lot of team work, and a special furry friend, to help them get back to shore safely.