Wildwood

Wildwood is a 2026 American stop-motion animated fantasy film co-produced and directed by Travis Knight and written by Chris Butler, based on Colin Meloy and Carson Ellis's 2011 novel. Produced by Laika, the film stars Peyton Elizabeth Lee, Jacob Tremblay, Carey Mulligan, Mahershala Ali, Awkwafina, Angela Bassett, Jake Johnson, Charlie Day, Amandla Stenberg, Jemaine Clement, Len Cariou, Maya Erskine, Tantoo Cardinal, Tom Waits, and Richard E. Grant. In the film, a teenage girl named Prue (Lee) and her classmate Curtis (Tremblay) travel into an enchanted forest in search of her infant brother after he is abducted. They find a manor and learn about a coming war from a mysterious woman who tragically lost her son.

Summary from Wikipedia (CC BY-SA).