All hell breaks loose when a giant grizzly, reacting to the slaughter of her cubs by poachers, attacks a massive rock concert in the National Park. [This sequel to "Grizzly" (1976) was left unfinished after production wrapped prematurely in 1983, … Steve Inwood, Deborah Raffin, John Rhys-Davies, Louise Fletcher, George Clooney, Laura Dern, Charlie Sheen Added on Amazon Prime 2023-07-26. Youtube Trailer