Slumberland (2022) is an American film based on the comic strip Little Nemo in Slumberland.
It tells the story of Nemo (Marlow Barkley) who lives with her father Peter (Kyle Chandler) in a lighthouse. After her father disappears at sea, Nemo is sent to live with her uncle Philip (Chris O’Dowd) who, though kind and well-intentioned, doesn’t have any experience in caring for a young girl (9 years of age perhaps?).
Nemo struggles adjusting to her new situation, including being at a school. She is also grieving, longing for her father and her dream life becomes more real than her waking life.
After Nemo sees her father again in Slumberland (many adventures later), she can begin adapting to her new life.