Well
Looks like Mario and Luigi had a makeover, haha; bunch of punks. Luigi smoking flower power joints, Mario eating his magic mushroom sandwiches and swing his massive wrench, Toad using all the equipment he has at his disposal helping out the others and still being as vulnerable as before, and peach just wasn't helpful at all. And Bowser is defeated once again.
Pretty much the same as before but with lots of improvements:
Luigi is not the coward he used to be, Mario has buff and bulk, Toad (although still weak) looks better and has better weapons at his disposal. Peach is... uh... forget about peach; they may have been better off without her. Bowser; definitely better that before.
I think the silent films with music in the background are actually nice with the right video; this was it.