Andrew and his family are going camping and are on there way to the house. Andrew doesn't really want to go, but he has to. Duffy his cousin always needs to reminded to grab things so he doesn't forget them.
Its not my fault Duffy didn't grab his jacket
Why didn't you remind Duffy to grab his jacket.
When Andrew and the family get to the house the house is trashed and in one of the rooms it says beware the sentinel.
Oh no not the sentinel
The family decides to go on a walk in the woods. While walking in the woods Andrew feels like someone is following them, but his mom won't believe him.
You forgot your jacket idiot
Soon after, there walk in the woods Andrew's mom blames him for not reminding Duffy to grab his jacket. Andrew doesn't understand why its his fault for not reminding him.
Then, their parents left and they started hearing a scratch on the door. After going back and forth they go up stairs and hide in one of the rooms, but the thing knows there in room.
The thing came in room, but all it had was Duffy's jacket.