Brain tries to fly a bush plane but ends up getting into a plane crash in the L shaped lake and gets stranded in the Canadian wilderness alone with nothing. On page 27-28 it says "Somebody was screaming,screaming as the plane drove down into the water."
Brain uses his Hatchet to make sparks and made a fire. He was so happy he yelled, "Fire! I've got fire! I've got it, I've got it, I've got it . . ." from page 86.
After he got his fire, he started to get food, like fish, and now he was trying to get a fool bird with his spear. Then he successfully threw the spear killing the bird. On page 134 it says "The bird had sat and he had lunged and the two points took the bird back down into the ground and killed it almost instantly..."