A remote fishing village in Iceland. Teenage boys Thor and Christian experience a turbulent summer as one tries to win the heart of a girl while the other discovers new feelings toward his best friend. When summer ends and the harsh nature of Iceland takes back its rights, it's time to leave the playground and face adulthood.
Unfortunately the movie Heartstone is not yet available on HBO Max.
| Writing | Guðmundur Arnar Guðmundsson | Writer |
| Directing | Guðmundur Arnar Guðmundsson | Director |
| Sound | Kristian Eidnes Andersen | Original Music Composer |
| Camera | Sturla Brandth Grøvlen | Director of Photography |
| Art | Hulda Helgadóttir | Production Design |
| Editing | Janus Billeskov Jansen | Editor |
| Editing | Anne Østerud | Editor |
| Production | Jesper Morthorst | Producer |
| Production | Eva Sigurðardóttir | Associate Producer |
| Production | Hilmar Sigurðsson | Consulting Producer |
| Production | Anton Máni Svansson | Producer |
| Production | Lars Bjørn Hansen | Executive Producer |
| Production | Lars Bredo Rahbek | Executive Producer |
| Production | Lise Orheim Stender | Producer |
| Production | Sara Nassim | Line Producer |
| Production | Guðmundur Arnar Guðmundsson | Producer |
