Gabriela Cowperthwaite takes a deep look into the captivity of SeaWorld's killer whales and the alledged dangers of keeping dangerous orcas in captivity. The documentary concerns the captivity of Tilikum, an orca involved in the deaths of three people, and the consequences of keeping orcas in captivity. The coverage of Tilikum includes his capture in 1983 off the coast of Iceland and his purported harassment by fellow captive orcas at Sealand of the Pacific. Cowperthwaite argues these incidents contributed to the orca's aggression. The documentary reports that the whales have experienced extreme stress when their offspring were captured in the wild and when separated after breeding at water parks. The film features footage of attacks on trainers by Tilikum and other captive whales as well as interviews with witnesses.