Wolves Up Close with Bertie Gregory

This movie is "Wolves Up Close with Bertie Gregory" and story line : Reconnecting with a pack of wolves he has followed for seven years, Bertie sets out to capture one of the Arctic's most dangerous and rarely filmed hunts: wolves taking on a bull moose, prey roughly ten times their size. Led by Kona, a striking white breeding male, the pack faces a critical winter as dwindling food supplies, an encroaching rival wolf and an aging leader threaten its survival..