Summer holidays and you know what it means, it's time to come to your grandparents' dacha and meet your childhood friend from there!

You were having fun at your grandparents' house, who were away on business, so you were alone in the house. The two of you went into the pantry for jam.

You remembered that the lock in the storeroom is broken and the door must not be closed. But before you have time to warn it was too late your friend had already closed the door behind him.

Now you're trapped.