Timothée Chalamet and Selena Gomez will voice star in Illumination’s upcoming alien movie Not Alone, it was announced out of the Annecy International Animation Film Festival.

Chalamet had teased the announcement in his Instagram Story on Sunday night. He posted a photo of a cloudy sky with the caption “new movie announcement tmrw :)” overlaid on the image, with a small rocket emoji, looking as if it was blasting into space.

Universal and Illumination shared the poster for Not Alone on social media on Monday. The film will hit theaters on April 16, 2027.

The role marks Chalamet’s first feature-length animated film and sees him play introverted rocket mechanic Joe. Gomez is set to voice Fran, an astro-botanist developing the first-ever plant fueled rocket.

“When Joe and Fran are brought together to prepare for the inaugural launch of this revolutionary rocket, there are immediate sparks, but neither is particularly adept at romance,” according to a synopsis from Universal. “Life becomes more complicated when three aliens—tiny, unruly and adorable—take refuge in Joe’s home. Dunk, Welly and Shirm are on the interplanetary run from a zealous-yet-inept officer of the law named Zandro. The aliens determine that Fran’s rocket could provide their means of getting back home to safety.”