Oscar Isaac and Mia Goth made an appearance at Netflix’s Tudum event on Saturday night to debut a teaser of their upcoming film Frankenstein, dropping some tidbits about the Guillermo del Toro project in the process.

The film stars Isaac as scientist Victor Frankenstein, with Jacob Elordi as the monster he creates and Goth as Victor’s fiancée Elizabeth Lavenza. Del Toro has spoken about the Mary Shelley’s novel Frankenstein being a longtime passion, something he has sought to make for decades.

On the carpet ahead of the Tudum presentation, Issac told The Hollywood Reporter that when del Toro first brought up the idea, “I wasn’t expecting it. I was just sitting with him talking and after a long conversation he looked up at me and said, ‘I think that you need to be my Victor Frankenstein.’ I still can’t believe it.”

“He said, ‘I’m going to make you a banquet as an actor,’ and that is what he did, every day I would come to set and I just was so excited and was doing all sorts of beautiful, difficult, expressive things,” Isaac continued. “I just had him as my brother, right there helping me every step of the way.”

Del Toro has previously said the project would not be a true horror movie, and Isaac described it as, “a big, Mexican, dark, sumptuous, dramatic character piece.” Goth added, “It’s an incredibly epic film. I’ve never been a part of something so big and so grand, but it’s also incredibly emotional and deeply personal. It’s a story that’s been a part of Guillermo’s life since he was a boy and so I definitely think people might be pleasantly surprised by how much heart there is in this movie.”