Paramount is working on a movie version of Robert C. O’Brien’s book “Mrs. Frisby and the Rats of NIMH.” This is the second theatrical adaptation; MGM previously released “The Secret of NIMH,” a 1982 Don Bluth animated film. The story centers on a mouse named Mrs. Frisby, who must protect her family when threatened by a farmer’s plow. She enlists a group of former lab rats, who possess advanced technologies to help on her quest. The new “NIMH” will combine live-action and animation, similar to “Alvin and the Chipmunks” and other hybrids. It will also most certainly be lighter than the original animated NIMH, though not as light and humorous as the more recent film starring rodents, G-Force.