Linus hoort dat zijn oma langskomt om zijn kinderlijke 'zekerheidsdeken' af te nemen, omdat het tijd wordt dat Linus volwassener wordt. De Peanuts-bende probeert Linus alvast te helpen door hem aan het idee te laten wennen. Lucy tracht dit te doen door middel van psychiatrische technieken, maar Charlie Brown heeft er meer moeite mee omdat hij ziet hoeveel Linus gehecht is aan zijn deken. Snoopy voert de spanningen echter op, omdat hij het dekentje voor zichzelf wil hebben.
Nee, helaas is Happiness Is a Warm Blanket, Charlie Brown nog niet beschikbaar op Netflix in Nederland.
| Directing | Andrew Beall | Director |
| Directing | Frank Molieri | Director |
| Sound | Mark Mothersbaugh | Music |
| Visual Effects | Darlie Brewster | Animation |
| Visual Effects | Matt Williames | Animation |
| Writing | Craig Schulz | Writer |
| Production | Craig Schulz | Producer |
| Writing | Stephan Pastis | Writer |
| Writing | Charles M. Schulz | Characters |
| Production | Craig Schulz | Executive Producer |
| Production | Stephan Pastis | Executive Producer |
| Production | Paige Braddock | Executive Producer |
| Production | Linda Steiner | Executive Producer |
| Production | Margaret M. Dean | Producer |
| Production | Shannon Nettleton | Co-Producer |
| Production | Jamie Simone | Casting |
| Art | Rozalina Tchouchev | Art Direction |
| Art | Toshiyuki Hiruma | Storyboard Artist |
| Art | Bronwen Barry | Storyboard Artist |
| Art | Dave Creek | Storyboard Artist |
| Art | Onno De Jong | Storyboard Artist |
| Art | Alberto Dose | Storyboard Artist |
| Art | Scott Jeralds | Storyboard Artist |
| Art | Dan Lund | Storyboard Artist |
| Art | Bob Foster | Storyboard Artist |
| Art | Sandra Frame | Storyboard Artist |
| Art | Scott Heming | Storyboard Artist |
| Art | T.J. House | Storyboard Artist |
| Art | Don MacKinnon | Storyboard Artist |
| Art | Frank Molieri | Storyboard Artist |
| Art | Andrew Beall | Storyboard Artist |
| Art | Achiu So | Storyboard Artist |
| Crew | Jeannie Schulz | Thanks |
| Sound | John Roesch | Foley Artist |
| Sound | Alyson Dee Moore | Foley Artist |
| Sound | Kyle Rochlin | Foley Mixer |
