When you have nobody but your ghosts

Abi and Sierra Foster are 6 years old twins who live in the city. One day, someone comes into their house and murders their parents and their older sister. The girls manage to get away but the murderer is still looking for them and he will find them one way or another. But what happens when the girls find an abandoned airport full of everything they need? Their will be scares,paranormal and most of all ... Death! So join Abi and Sierra on their journey to survive