Mark Ruffalo says 'Thor: Ragnarok' is a "road movie" that takes place across the universe.
The 47-year-old actor will reprise his role as Bruce Banner - who turns into The Incredible Hulk whenever he gets angry - to team up with Chris Hemsworth's Thor in the third instalment of the Marvel Studios franchise.
Ruffalo, who has played the Hulk in 'The Avengers' and 'Avengers: Age of Ultron', claims the movie has elements of a classic on the road buddy story, despite the main characters being superheroes.
He said: "It is a universal road movie - that's where we're heading. It's not where you'd think it will be, so it's not your classic road movie but it has that structure, I think."
Ruffalo and Hemsworth will also be joined by Tom Hiddleston and Jaimie Alexander, who play Loki and Sif respectively, and the movie will reportedly involve a "distant planet" that is "not Asgard and not Earth".
Ruffalo insists he and Hemsworth get on very well off screen and he is delighted Hulk and Thor are going to team up away from the rest of 'The Avengers' squad.
He told EmpireOnline: "I love Chris [Hemsworth], and it's not an accident that we've been put together because we have a good time together and we goof off. The fact that we're moving towards the smart-comedic bent plays into our relationship. [Am I looking forward to that?] Hells, yeah."
'Thor: Ragnarok' will be directed 'What We Do in the Shadows' filmmaker Taika Waititi and is slated for release in November 2017.