R-T, Margaret, and the Rats of NIMH (film)

R-T, Margaret, and the Rats of NIMH is an upcoming sequel film based on the book.

Coming soon in 2020's.

Synopsis
After the film, the rats and the humans are (?). The Thorn Valley (?). The human kids are lost in the woods at the camping trip.

Characters
Mice Humans
 * (?) as Timothy Brisby
 * (?) as Christopher
 * (?) as Elizabeth Brisby
 * (?) as Johnathan Brisby
 * (?) as Martin Brisby
 * (?) as Racso
 * (?) as Arthur
 * (?) as Justin
 * (?) as
 * (?) as Artie 'RT' Livingston - the human autism boy
 * (?) as Margaret Livingston - the human girl
 * (?) as Mr. Livingston
 * (?) as Mrs. Livingston
 * (?) as