It was later joined by PETA, which offered pictures and video footage, including photos from a whistleblower depicting elephant training at the Ringling Bros circus.

It then shows an "elephant healing area" created in Northern California by Ed Stewart and Pat Derby, founders of Performing Animal Welfare Society.

It describes various incidents of elephant communication and their emotional bonding; and it relates the story of Topsy from Luna Park, Coney Island, and her electrocution on January 4, 1903.

[10] Emily Ashby from Common Sense Media mentioned in her review that though the documentary is "eye-opening on a longstanding animal-rights issue", it is one-sided and not advisable viewing for young children.

[11] A review from Postmedia News by Alex Strachan recommended the documentary as an "appropriate viewing on Earth Day" with huge demands for ivory trinkets from China.

They mentioned that Amy Schatz contacted them to have "a full range of voices on the subject of elephants" but did not showcase anything saying "the Conservation Center isn't one HBO wants us to cover in the film".