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 |
| Production | Henning Ferber | Producer |
| Production | Max Wiedemann | Co-Producer |
| Directing | Manuel Siebert | First Assistant Director |
| Art | Marc Ewert | Storyboard Artist |
| Sound | Jean-Marie Gilles | Foley Mixer |
| Sound | Fabian Kucper | Boom Operator |
| Visual Effects | Lukas Menzel | Digital Compositor |
| Camera | Oliver Oppitz | Still Photographer |
| Camera | Finn Weege | Data Wrangler |
| Editing | Maximilian Buske | Online Editor |
| Editing | Janina Grulich | Dailies Manager |
| Editing | Sven Hegen | Colorist |
| Editing | Tobias Wiedmer | Colorist |
| Production | Manuela Groh | Production Coordinator |
| Directing | Falk Schwalbe | Script Supervisor |
| Camera | Yoshua Berkowitz | Steadicam Operator |
| Camera | Lukas Taglieber | Assistant Camera |
| Camera | Carol Burandt von Kameke | Director of Photography |
| Camera | Conny Klein | Still Photographer |
| Camera | Bernd Spauke | Still Photographer |
| Lighting | Roman Breitwieser | Gaffer |
| Art | Zita Pichler | Art Direction |
| Camera | Joscha Jenneßen | Key Grip |
| Production | Samuel Schenke | Key Grip Production Assistant |
| Art | Ina Timmerberg | Production Design |
| Art | Nicky Sproten | Assistant Production Design |
| Costume & Make-Up | René Jordan | Makeup Artist |
| Costume & Make-Up | Katharina Pöder | Makeup Artist |
| Costume & Make-Up | Eugenia Giesbrecht | Costume Design |
| Costume & Make-Up | Ildiko Okolicsanyi | Assistant Costume Designer |
| Editing | Nicole Kortlüke | Editor |
| Sound | Andreas Hintzsch | Dialogue Editor |
| Sound | Erik Seifert | Sound |
| Sound | Fabian Kucper | Sound Assistant |
| Sound | Nicolas Sturmberg | Sound Assistant |
| Sound | Clemens Grulich | Sound Mixer |
| Production | Jacqueline Rietz | Casting |
| Sound | David Reichelt | Music |
| Art | Katharina Witsch | Interior Designer |
| Art | Effi Dimitriou | Interior Designer |
| Art | Christoph Becker | Property Master |
| Art | Semina Basic | Assistant Property Master |
| Art | Janna Järvsaar | Assistant Property Master |
| Art | Tom Hecker | Props |
| Art | Jutta Freyer | Props |
| Art | Katia Kandziora | Props |
| Art | Katja Schlömer | Props |
| Production | Peter Dittberner | Production Manager |
| Production | Holger Kunze | Unit Manager |
| Production | Dimitri Serovatski | Unit Manager |
| Production | Frank Wayne Leßmöllmann | Unit Manager |
| Production | Fernando De Bran | Unit Manager |
