Nadat ze gebroken heeft met haar vriend trekt een jonge vrouw (Anna Kendrick) in bij haar oudere broer, zijn vrouw en hun 2-jarige zoontje. Ze blijkt echter niet de kamergenoot te zijn die ze hadden verwacht.
Nee, helaas is Happy Christmas nog niet beschikbaar op Netflix in Nederland.
| Production | Peter Gilbert | Producer |
| Production | Joe Swanberg | Producer |
| Directing | Joe Swanberg | Director |
| Production | Edwin Linker | Executive Producer |
| Writing | Joe Swanberg | Writer |
| Crew | Ben Richardson | Cinematography |
| Camera | Eon Mora | First Assistant Camera |
| Lighting | Christian Hins | Gaffer |
| Sound | Jesse McAlpin | Sound Mixer |
| Sound | Sean Kirkpatrick | Boom Operator |
| Sound | Chris Swanson | Music Supervisor |
| Production | Alicia Van Couvering | Co-Producer |
| Production | Tom Aries | Associate Producer |
| Production | Shelley Fox | Associate Producer |
| Production | Matthew Eggers | Associate Producer |
| Production | Tara Eggers | Associate Producer |
| Production | Tom Egger | Associate Producer |
| Production | Yra Harris | Associate Producer |
| Production | Janice Harris | Associate Producer |
| Production | Michael Klong | Associate Producer |
| Production | Breea Klong | Associate Producer |
| Production | Susie Linker | Associate Producer |
| Production | Laura Mizrahi | Associate Producer |
| Production | Jeanne McInerney | Associate Producer |
| Production | Dave McKeon | Associate Producer |
| Production | Karen McKeon | Associate Producer |
| Production | Hartley Meyer | Associate Producer |
| Production | Theresa Snyder | Associate Producer |
| Production | Tamar Stone | Associate Producer |
| Production | C.T. Terry | Associate Producer |
| Lighting | Alex Malm | Assistant Gaffer |
| Production | Mark Lukenbill | Post Production Coordinator |
| Sound | Drew Weir | Sound Re-Recording Mixer |
