The Smurfs Season 10 Episode 4 Happy Unhappiness Day to You/The Great Slime Crop Failure
- November 14, 2011
Happy Unhappiness Day To You!: The Smurfs observe Unhappiness Day, when they are sad so as to appreciate their year-round joy. An unwitting Gargamel tries to use his happiness-detector to find the Smurfs on the one day they're not.The Great Slime Crop Failure: Farmer is captured by a Wartmongers, who force him to cure a failing slime harvest.
