The documentary takes you back to the 1980,s and the beginning o the Orca's demise. It has various interviews and first person narratives of how orcas actually have displayed aggressive behavior within the confined pools in SeaWorld and other places, like Loro Parque in Tenerife, Spain. There is some bloodshed in the movie, so I would advise caution if you plan on taking your kids. This piece is similar to another movie about similar cetacean, The Cove; in both movies you get pieces of a truth well hidden by those with a fat pocket, unwilling to let go the reins of a multi-billionaire industry. It's just sad.
Be prepared to view heartbreaking footage. To pillage another being's young, to dislpay it in front of millions of viewers and lie to the public in order to conceal the animals' frustration--leading to fatal, aggressive behavior--is immoral. It's obvious to you as a viewer how much these animals suffer when they are being taken from their pods by looking at the trainer's reaction to the animal's captivity. The saddest part of the movie for me was Tilikum's abduction. An orca's wailing after its young has been taken from its side is heartbreaking.
So think about it for one second. You're taken from your parents when you are four years old, stuck in a tank made of concrete, and forced to hang out with strangers from a diversity of cultures you would probably hate (each pod of orcas is so different that it's like comparing the Homo sapiens, a single species, with thousands of different religions) --this is the road to insanity.
It's not only about freeing Tilikum; it's also about stopping the massive hunting of whales and other highly intelligent beings, like dolphins. Cetaceans are having a hard time nowadays. Watch "The Cove" and you'll see what I'm talking about.