Watch: Ryan Reynolds stars in John Krasinski fantasy film 'IF'

Ryan Reynolds stars in the new fantasy comedy "IF." File Photo by John Angelillo/UPI
Ryan Reynolds stars in the new fantasy comedy "IF." File Photo by John Angelillo/UPI
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Dec. 14 (UPI) -- Paramount Pictures is giving a glimpse of the new film IF.

The studio shared a teaser trailer for the movie Thursday featuring Ryan Reynolds.

IF is a live-action and animated fantasy comedy written and directed by John Krasinski.

The film follows a young girl (Cailey Fleming) "who discovers that she can see everyone's imaginary friends -- and what she does with that superpower -- as she embarks on a magical adventure to reconnect forgotten IFs with their kids."

Krasinski, Fiona Shaw, Phoebe Waller-Bridge, Louis Gossett Jr., Emily Blunt, Matt Damon, Maya Rudolph, Jon Stewart, Bobby Moynihan, Sam Rockwell, Sebastian Maniscalco, Christopher Meloni, Richard Jenkins, Awkwafina and Steve Carell also star.

John Krasinski (R) and Emily Blunt attend the SAG Awards in February. File Photo by Jim Ruymen/UPI
John Krasinski (R) and Emily Blunt attend the SAG Awards in February. File Photo by Jim Ruymen/UPI

Krasinski shared a poster for the film Wednesday.

Phoebe Waller-Bridge attends the Cannes Film Festival premiere of "Indiana Jones and the Dial of Destiny" in May. File Photo by Rocco Spaziani/UPI
Phoebe Waller-Bridge attends the Cannes Film Festival premiere of "Indiana Jones and the Dial of Destiny" in May. File Photo by Rocco Spaziani/UPI

"What if everything you believed as a kid... was real?!" he captioned the post. "I am so very excited to share IF with you all! Far and away one of the most magical experiences I've ever had!"

Emily Blunt attends the Academy Awards in March. File Photo by Jim Ruymen/UPI
Emily Blunt attends the Academy Awards in March. File Photo by Jim Ruymen/UPI

IF opens in theaters in May.

The film will mark Krasinski's first release as a writer, director and producer since A Quiet Place Part II (2020).