In your childhood, you were a bit different from others. Whenever you saw the less fortunate, you were always the one to step up and help. Perhaps your ability to see ghosts might stem from this compassionate nature.
Then, one day, rumors spread that the ghosts in a very small hotel would be exorcised. And it's by an extremely ruthless exorcist.
In the end, you set off for the hotel ahead of everyone else. The task at hand seems self-evident.