I really liked the original DENNIS THE MENACE. It was funny, lighthearted and with Christopher Lloyd that played a great villain as Sam Switchblade. I saw the sequel out of curiosity but I really regret it and it sorely misses the cast of the original including Lloyd.
2 years after the event of the original Dennis Mitchell is worse than ever. He goes to Mr. Wilson (Don Rickels instead of Walter Matthau) to taking a small collection of tiny animals, but this makes Wilson fall down a flight of stairs and getting his birthday cake thrown in the face by Martha. Soon Dennis' grandfather Mr. Johnson (George Kennedy) arrives and tells the Mitchells he is going to move there. Dennis is happy and begins to spend more time with his grandfather. George is then upset that he is getting older and so is tricked by two con men, the Professor and his assistant Sylvester (Brian Doyle Murray and Carrot Top) that try to convince him in buying a rare root that should be put in tea for making people return younger. But they don't know Dennis Mitchell yet as he will do everything for foiling their inane plans while also causing more trouble for Mr. Wilson.
A different cast and a different setting are the most likely reasons of the failure of this direct-to-video sequel. The humour didn't made the laugh not even once, and most of the jokes made me cringe a lot. The actors here are all very bland, they never seem to actually act except for George Kennedy who is probably the only one actually trying.
Among the worst family movie sequels ever made, but there is something positive about it and I discovered it only after lots of thinking. So, what's the only good thing about this movie? It has never been released in theaters! Otherwise they would have made at least other 10 sequels each worse than the other.