In Elf's world, all locks have a magical reset diamonds inside the lock, which could only be used by locksmith. During the game, players will play as Elf Locksmiths, use the magic keys in hands, through all the lock cogs and keyholes inside, to reset the lock, and save the poor Elf Sibbings the day! The game's rundown is simple: Setup the Locks according to instructions; Put the magic key into the keyholes, and find a way to reach the reset diamonds, without destroying the lock. Whoever reset the lock save the day!