Some random kid with a flute makes cookies dance...
another random kid with a flute hypnotizes other kids into getting sucked into the Black Dream Hole.
The boss is some random alien queen.
The kids that get hypnotized turn into candy monsters to serve the alien race...
The outer planet senshi show up to help, because this enemy is from outside of the solar system... They learned new attacks from their talismans.
Sailor Moon eats one of Chibiusa's cookies in order to gain courage, and jumps inside the Black Dream Hole to save Chibiusa...
She realizes she's in a dream, and her silver crystal starts to brighten up the black dream hole world...
Another thing where all of the Sailor Senshi lend Sailor Moon their powers so she can use the silver crystal to fix everything, and wake Chibiusa...
This movie is using the theme of dream-snatching enemies from the SuperS season plot and doing something a little different with it... it was okay I guess.