PART FIVE:

After the flying saucer and everyone had been restored to size. Topcat locked all the evil aliens (except for the saucer's captain) in the CatAvenger's brig. Topcat along with Spooky and Panther forced the alien captain to show them how the saucer worked.
The CatAvenger rendezvoused with the saucer in Great Britain and restored the missing sheep to Scotland, beaming them down.