The Destination is Whale Plane Island. The Mission is to build a runway long enough for the Air Whale to land on. Rex transforms to lift the heavy Runway Ribbon; Sasquatch transforms to stretch to all corners of the Ribbon and hold it down; Komodo transforms to hammer the Ribbon into place; Unicorn transforms to use her magic horn to guide the Whale Plane to the new runway. When the Whale Plane lands, it reveals that its loaded with a cargo of more Runway Ribbon.
click here to see where to watch or (watch here).
Ready to Watch Animal Mechanicals, Season 1, Episode 4?