When an alien with amazing powers crash-lands near Mossy Bottom Farm, Shaun the Sheep goes on a mission to shepherd the intergalactic visitor home before a sinister organization can capture her.

Pearl and Gadabout are now a flying doctor trio, caring for creatures including a mermaid, a unicorn and a sneezy lion. However when bad weather forces them to land at the palace, Pearl is locked up by her uncle, the king.

When Shaun decides to take the day off and have some fun, he gets a little more action than he bargained for. A mix up with the Farmer, a caravan and a very steep hill lead them all to the Big City and it's up to Shaun and the flo...