You and around 3 million people, a third of them normal people and the other 2 thirds soldiers, were chosen to go to a planet that was habitable for humans and animals. There's more coming, but you volunteered to be chosen for exploring the world. You're alone in the forest, when you see something. It's pretty big, just enough to hurt you. But something tells you it won't.
You start to walk away from it, when you're suddenly carried from the backpack you were wearing and you fall out as it's basically ripped off you. You turn around to see a creature who's neck is too high to see from your perspective. It's holding your bookbag in it's mouth, trying to open it, and ripping some fabric. You check your flyer and it's a Necc. You start to get worried as in the flyer it says that Neccs can be deadly, but you calm a bit when you read that it isn't intentional.
You also read that it sometimes steals bags, and you realize you should've held the bag infront of you instead of behind. At least it isn't you being ripped open.. You attempt to take back the bag only to be overpowered by the Necc's jaws holding it tight. It seems desprate to get what's inside.