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 2020s.

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

Characters
Mice Humans
 * (?) as Timothy Brisby
 * (?) as Christopher
 * (?) as Elizabeth Brisby
 * (?) as Johnathan Brisby
 * (?) as Martin Brisby
 * (?) as Teresa Brisby
 * (?) as Cynthia Brisby
 * (?) as Racso
 * (?) as Arthur
 * (?) as Justin
 * (?) as Brutus
 * (?) as Isabella
 * (?) as Arthur 'R.T.' Livingstone - the human boy with autism
 * (?) as Margaret Livingstone - the human girl
 * (?) as Mr. Livingstone
 * (?) as Mrs. Livingstone
 * (?) as Sheriff Johnson
 * (?) as Dr. Schultz
 * (?) as Mr. (?) - the old man next door neighbor
 * (?) as

Transcript
Film transcript: R-T, Margaret, and the Rats of NIMH (film)/Transcript

Soundtrack
(Any ideas)