He gets takled over by a moose and get's hurt then a tornado hits and he looses a lot of his supplies.
He sees the airplane after the tornado at the surface of the water and gats a thought that there might be a survival pack in the airplane. Then he swims to the airplane goes inside and retrived the survival pack witch has food, stuff to make a fire, an SOS caller, ect.
A guy flying around Brain's SOS call and brings him back home. After Brian being in the woods for two months he finnally gets to go back home.