Paul Rudd will star in a film adaptation of Ann M. Martin’s Rain Reign, Deadline reports.

Martin’s novel for children, published in 2014 by Feiwel & Friends, follows Rose Howard, a neurodivergent girl who goes in search of her dog, Rain, who goes missing after a huge storm hits their town. In a starred review, a critic for Kirkus wrote of the book, “There is no fluff here, just sophisticated, emotionally honest storytelling.”

Rudd (The 40-Year-Old Virgin, Ant-Man) will play Rose’s uncle, while Jeremy Sisto (Wrong Turn, Waitress) will play her father. Rose will be played by Felice Kakaletris (Annie Live!, The Sisters Karras). Other cast members include Mary Stuart Masterson (Fried Green Tomatoes) and Gretchen Mol (Manchester by the Sea).

The film is written and directed by actor Erika Burke Rossa. “What moved me about Ann’s novel—and inspired me to adapt Rain Reign into a film—was the Howard family’s journey toward breaking cycles of trauma and finding hope in hardship,” she told Deadline. “For me, the story’s heart lies in how, even in our darkest moments, the most profound acts of heroism are often the most quiet acts of kindness.”

Kakaletris shared news of the film on Instagram, writing, “A story that will shatter your heart—and spark a light you didn’t expect. Meet Rose in Rain Reign. Open your heart. Grab your tissues.”

Michael Schaub is a contributing writer.