In Juan Diego Solanas' romantic fantasy film Upside Down starring Kirsten Dunst and Jim Sturgess, the two play long-lost loves from youth who are destined to reconnect despite living in two different worlds with opposite gravitational pulls. Their dual worlds – hers up, and his down – connect, but don’t overlap. “The danger of the idea was the overly technological look,” Solanas told Uinterview in an exclusive interview. “There were a lot of problems going on. I spent hours at night not sleeping but searching for solutions for the problem.”

Casting the star-crossed lovers came more easily for Solanas than creating the complex visuals of the film. “Kirsten Dunst, I love her, she was the perfect balance between fragility and well, she just fit so well in Eden’s character,” the director said. “And Jim the same, I saw him in London. I went up to see him and I said, 'Oh my God, that’s Adam!'”

Solanas, 46, was born in Argentina to film director Fernando Solanas. Following his father’s footsteps into the film industry, he has worked as a cinematographer, screenwriter and producer as well as a director. In 2005, his film Nordeste screened in the Un Certain Regard section of the Cannes Film Festival.

Click here to read Juan Diego Solanas’ full Q&A with Uinterview