"Wherever he goes and whatever he's up against, Sonic the Hedgehog is aided by his sidekick, Tails, and his friends Knuckles, Amy, and Sticks and, of course, attacked by his arch nemesis, Dr. Eggman. On this action-packed DVD, join Sonic and his friends as they travel to a city in the clouds that has been taken over by evil robots. Find out what happens when the gang finds themselves trapped inside Eggman's lair. Come along on these action-packed adventures and so much more!"--Back cover.

Title from disc label.

Robot's from the sky parts 1-4 -- Strike! -- The evil Doctor Orbot -- Lair on lockdown -- Return to beyond the Valley of the Cubots.