As usual for Hill and Spencer movies, they are two self centered and greedy characters, who basically care only for themselves, but still manage to do the right thing when the time comes.
Hill and Spencer could easily be the modern day equivalent of everymen. The only thing that has them motivated (in any of their movies) is greed for money, because they don't have it and are prepared to do many things to get it (although they would never really cross the border of the law).
In this case there's an old uncle with a treasure map and his nephew (Hill), who doesn't really believe him, but once he gambled away all of the mafia's money, the treasure seems to be the only way out for him. So he hides away on a sailboat as a last possible way to get away from the pursuers. The captain (Spencer) is only doing this trip with the sailboat to get the money from the sponsor Puffin (making a product he hates himself). And after they loose the boat (as usual Hill dragged Spencer in the middle of it all) they have nothing left but the treasure to search for.
As with other similar movies like "Go For It", "Crime Busters", "Double Trouble" or "Odds and Evens" Spencer is a grouchy leave-me-alone character and Hill the happy-go-lucky character. The first half an hour is a way to bring these two everymen in a situation where the slapstick comedy occurs. Although always shallow, the plot is plausible enough to let you settle in it and the opening part of the movie, when they are just getting to the point, is as always the funniest, for it doesn't rely on slaps and punches.
After the landing on the island with the treasure the slapstick comedy gets on the way. So expect punches, kicks, slaps and many hurt bad guys. And as usual there is the reward to be had, so they find the treasure - still they can't get rich off it. It's never that easy, so just like the real modern everyman they are left more or less empty handed in the end.
All in all a very amusing and simple movie, that would fall in the category of upbeat movies that will brighten your day, even though when you really think about it, you'll see it has a lot more to offer the it first seems.
