Flo and his trusted Collie pal Lassie spend the summer at Aunt Cosma's, alongside her foster children Kleo and Henry, and her dog Pippa. When local canines start disappearing, including Pippa, Lassie rallies the kids to solve the mystery.
Unfortunately the movie Lassie: A New Adventure is not yet available on HBO Max.
| Directing | Hanno Olderdissen | Director |
| Writing | Andreas Cordes | Writer |
| Production | Max Conradt | Co-Producer |
| Production | Quirin Berg | Co-Producer |
| Sound | Jean-Marie Gilles | Foley Mixer |
| Camera | Finn Weege | Data Wrangler |
| Directing | Manuel Siebert | First Assistant Director |
| Visual Effects | Lukas Menzel | Digital Compositor |
| Camera | Oliver Oppitz | Still Photographer |
| Editing | Nicole Kortlüke | Editor |
| Camera | Carol Burandt von Kameke | Director of Photography |
| Camera | Conny Klein | Still Photographer |
| Camera | Joscha Jenneßen | Key Grip |
| Production | Max Wiedemann | Co-Producer |
| Art | Marc Ewert | Storyboard Artist |
| Camera | Yoshua Berkowitz | Steadicam Operator |
| Production | Samuel Schenke | Key Grip Production Assistant |
| Costume & Make-Up | René Jordan | Makeup Artist |
| Sound | Fabian Kucper | Boom Operator |
| Camera | Bernd Spauke | Still Photographer |
| Art | Ina Timmerberg | Production Design |
| Production | Manuela Groh | Production Coordinator |
| Editing | Maximilian Buske | Online Editor |
| Editing | Janina Grulich | Dailies Manager |
| Costume & Make-Up | Ildiko Okolicsanyi | Assistant Costume Designer |
| Production | Henning Ferber | Producer |
| Camera | Lukas Taglieber | Assistant Camera |
| Costume & Make-Up | Eugenia Giesbrecht | Costume Design |
| Directing | Falk Schwalbe | Script Supervisor |
| Editing | Sven Hegen | Colorist |
| Editing | Tobias Wiedmer | Colorist |
| Lighting | Roman Breitwieser | Gaffer |
| Art | Zita Pichler | Art Direction |
| Art | Nicky Sproten | Assistant Production Design |
| Costume & Make-Up | Katharina Pöder | Makeup Artist |
| Sound | Fabian Kucper | Sound Assistant |
| Sound | Andreas Hintzsch | Dialogue Editor |
| Sound | Erik Seifert | Sound |
| Art | Katharina Witsch | Interior Designer |
| Production | Fernando De Bran | Unit Manager |
| Sound | Clemens Grulich | Sound Mixer |
| Sound | David Reichelt | Music |
| Art | Semina Basic | Assistant Property Master |
| Sound | Nicolas Sturmberg | Sound Assistant |
| Production | Dimitri Serovatski | Unit Manager |
| Production | Frank Wayne Leßmöllmann | Unit Manager |
| Production | Holger Kunze | Unit Manager |
| Art | Effi Dimitriou | Interior Designer |
| Art | Tom Hecker | Props |
| Art | Katja Schlömer | Props |
| Production | Peter Dittberner | Production Manager |
| Art | Jutta Freyer | Props |
| Art | Janna Järvsaar | Assistant Property Master |
| Production | Jacqueline Rietz | Casting |
| Art | Christoph Becker | Property Master |
| Art | Katia Kandziora | Props |
