Jack was born in Burk's Falls, spending most of his life there. He lived a fairly normal childhood, Dad working overtime, Mom taking car of him and his brother. Being that Burk's Falls was a small town in Northern Ontario, Jack was able to learn how to shoot, hunt, fish, the basics needed to get by in the wild for a little while.
He and his family were visiting his grandparents in Moscow when the infection hit. His family hastily made their way south of the city, the last stop he saw his grandparents was Skopin, three weeks in, watching his stubborn grandfather refuse to sit and wait in the car, his wife following closely behind him, Jack watched them turn a corner, as they would "vanish" into air. Three months later losing his father to the Volga near Saratov as they tried to cross in a small fishing boat. His mother only making it a few more days as the infected got her ponytail.
Now, Jack was all alone, in a country with a language he didn't understand. He followed paths, roads, and trails as he made his way across Russia. He'd make it to Staraya Poltavka, meeting a group of fishermen who took him in. He followed them to Ilovlya before they were swarmed and devoured. On the outskirts of Volgograd, a group of thugs felt bad enough to spare him so he could be their pack mule. He carried their gear until they were shot when they bit off more than they could chew, close to Rostov. The group who killed the men were Ukrainians, who, when realizing Jack wasn't a Russian, he was taken in once again. These men stuck around, making it close to Belozersk before they were jumped and murdered.
Somewhere in Northern Chernarus, Jack was kidnapped and forced to fight another man to death, being stabbed multiple times in the process. Managing to survive the attack, he was sold off into slavery. The man who bought him, freed him as soon as he was far enough away from the attackers. Jack thanked the man, and continued to fight another day. He unintentionally made his way west, somehow avoiding infection and the infected. He got lost in the woods, popping out near Krasnoe after two weeks. Jack would loot what he could, before finding a road to follow south. He'd follow the road aimlessly, heading towards the smells and sounds of the sea.