Life in plastic is fantastic for Will Ferrell and Sex Education’s Emma Mackey, who are the latest stars to join Margot Robbie in the Greta Gerwig-directed Barbie at Warner Bros.

Also on the call sheet are Ryan Gosling as the ascot-wearing Ken, Shang-Chi‘s Simu Liu, SNL star Kate McKinnon (Ghostbusters), Alexandra Shipp (tick, tick… BOOM!, X-Men: Dark Phoenix), and America Ferrera (Superstore, the How To Train Your Dragon franchise). Production on the project, which is co-written by Gerwig and Noah Baumbach, is already underway.

Sources report that Will Ferrell will be playing the CEO of a toy company – whether or not it might be Mattel, the toy company behind Barbie’s invention, remains a mystery. Nothing is known about Mackey’s role in the feature, but the young actress has previously been dubbed Robbie’s doppelganger, so could she also be portraying a take on the Barbie doll?

Though very little has been confirmed about the plot in the upcoming film, Barbie’s IMDb page sets the story as so: “A doll living in ‘Barbieland’ is expelled for not being perfect enough and sets off on an adventure in the real world.” It suggests a meta take on the toy line, though it also sounds like the plot to 2008’s The House Bunny starring Anna Faris.

But hey, it’s all speculation for now! Stay tuned for the facts as we get them.