John Krasinski is the writer, producer, and director of IF, an American live-action/animated fantasy comedy film released in 2024. The voices of Phoebe Waller-Bridge, Louis Gossett Jr., and Steve Carell are joined by an ensemble cast that includes Cailey Fleming, Ryan Reynolds, Krasinski, Fiona Shaw, Alan Kim, and Liza Colón-Zayas. The story is around a small child and her neighbor who get the ability to perceive imaginary pals.

The story has follow as her father awaits heart surgery in the same hospital where her mother passed away from cancer years prior, 12-year-old Bea moves into her grandma Margaret’s apartment in New York, setting the stage for the plot. Bea witnesses a weird creature one evening while out looking to purchase a charger for her mother’s outdated camcorder. She follows it back to her grandmother’s building. She sees the thing again the next day, this time with a guy in tow. Bea goes with them to a neighboring home where the guy, Cal, gets out a big, purple, fuzzy animal that he names Blue. She also encounters Blossom, the second creature, who resembles a butterfly, and passes out.

When she wakes up at Cal’s apartment, she finds out that he has been putting imaginary friends—also known as IFs—into new homes since their original kids have grown up and forgotten about them. Bea is reluctant at first, but she ultimately decides she wants to assist. The following day, Cal brings Bea to Memory Lane Retirement Home, an IF retirement home situated beneath a Coney Island amusement park. There, he presents Bea to Lewis, the facility’s senior teddy bear leader. To Cal’s dismay, he encourages Bea to utilize her creativity in redesigning the establishment. Bea is inspired to audition the IFs in order to choose one for Benjamin, a small kid she met in the hospital named Benjamin.

He can’t see any of them, sadly. While chatting with her grandma, she notices a photo of herself when she was a young dancer and spots Blossom in the background. Bea determines that getting the IFs back together with their original children is the best course of action after learning that Blossom was her grandmother’s IF. Margaret is inspired to dance and remembers Blossom when she plays one of her grandmother’s albums, giving Bea hope.

Bea, Cal, and Blue locate Blue’s first child, Jeremy, who is now an adult attempting to start a company, after receiving a tip. Bea and Cal are successful in reminding Jeremy of Blue and bringing him back together, despite their first attempt failing, and this gives Jeremy the confidence he needs to ace a presentation. But Margaret is distraught when Bea gets home that night and informs her that something went wrong with her father’s surgery. Bea runs upstairs to Cal, who gives her consolation. Cal advises Bea to tell him a tale instead of saying goodbye when she says she doesn’t want to say goodbye to her dad.

When Bea tells her father at the hospital that she attempted to be an adult but that her father still tried to bring joy into her life and that she needed him, he becomes roused. When Bea gets to her grandma, she discovers that the IFs are no longer there.

Following their discharge from the hospital, Bea and her father prepare to return home. When Bea walks upstairs to bid Cal farewell, nobody comes to open the door. When Bea knocks, the landlady answers and says the door leads to an old storage room. Bea discovers an old painting she did of herself, her parents, and a clown named Calvin while collecting her belongings for the vehicle. She instantly realizes that Cal was her own imaginary friend, who she had forgotten about following the loss of her mother. Her vision returns to Cal and the other IFs, and she shuts her eyes and recalls.

A while later, the other IFs meet up with their original children once again, including Bea’s father’s invisible IF, Keith, who enjoys tripping people.

Paramount Pictures has scheduled IF’s theatrical debut in the United States for May 17, 2024.