The film is an adaptation of Patrick Ness' award-winning children's fantasy novel and is being directed by Juan Antonio Bayona of 'The Impossible' fame.
The story revolves around a young boy who attempts to deal with bullying at the hands of his classmates, and his mother's terminal illness, by escaping into a fantastical world through the guidance of a tree monster, according to the Hollywood Reporter.
Weaver will play the boy's grandmother, Jones is on board as the mother, while Neeson is playing the titular monster.