Margot Robbie and Colin Farrell walk through a mystical door to relive defining moments from their pasts in their new movie A Big Bold Beautiful Journey.
"It is a love story between David (Colin Farrell) and Sarah (Margot Robbie), but it is also about loving yourself before you can love someone else," Robbie says.
The characters go back to the past to see how they got to where they are in the present.
"It's a lot about finding that grace to forgive yourself and realising you can't really fully commit to loving someone else until you've done that," she says.
Reminiscing the past may even be difficult for some people, much less 'literally' going back.
But Farrell says the movie explores difficult times with delicacy.
"It doesn't shy away from things that will befall us all, like grief and loss and suffering and pain and sadness and loneliness and all those human experiences," Farrell says.
"It was lovely to have the opportunity to be in something that had no cruelty at all," he says.
Aussie-Irish connection
Robbie and Farrell’s chemistry is clear as on-screen lovers but the pair says it was more than just acting.
"That was the best part of this whole job," Robbie says about working with Farrell.
"It just was a joy every single day," Farrell agrees.
"There's something about the Aussies and the Irish," Robbie says.
Farrell says he lived in Australia when he was 17.
"I went to bed in Ireland, I woke up, I got on a plane, and then all of a sudden I arrived in Sydney, but I didn't really leave Ireland that much," Farrell says.
He recalls the "lack of culture shock" when arriving in Australia.
"There's a certain similarity in wit, the amount of beer we drank back then," Farrell jokes.
He even recalls indulging in an Aussie 'delicacy'.
"Victoria Bitter stubbies," he reminisces.
"You drank VB's?" Robbie laughs.
The pair chat with ease and agree that it was one of the most joyful experiences they have ever had making a film.
"But yeah, it was easy from the get-go," Farrell says.
A Big Bold Beautiful Journey opens in cinemas on 18 September.