[3] It tells the life story of a chimpanzee named Nim Chimpsky, who was the center of a 1970s research project to determine whether a primate could learn to speak using American Sign Language.

He learned the signs for many more words and attracted some media attention, but he also injured a number of the researchers, which became increasingly troubling as he continued to become larger and stronger.

Fearing negative publicity, NYU released Nim, and he was bought by Cleveland Amory and moved to Black Beauty Ranch in Texas.

Ingersoll reestablished a relationship with Nim and arranged with James Mahoney for a male and female chimp to be sent to the ranch from LEMSIP, which was shutting down.

[9] David Rooney of The Hollywood Reporter wrote: "This haunting life story is an exquisite example of non-fiction filmmaking as full-bodied, emotionally complex drama.

"[10] Marjorie Baumgarten of The Austin Chronicle was less positive, writing: "There is no question Nim was exploited for human gain, yet there are important aspects which Marsh leaves unexplored.