Particular request of occasions in the diversion will differ relying upon decisions that the player has made amid the amusement, yet the general plot stays unaltered. The diversion opens with Professor Hershel Layton and his young aide Luke heading to the town of St. The Baron expressed in his last will and confirmation that whoever fathoms the secret of the Golden Apple will inherit his fortune, and a few individuals have endeavored and fizzled. The two enter the town and find that the greater part of the populace is enamored with riddles and mind teasers, which both Layton and Luke are proficient at illuminating.
They see a vast, random tower that possesses one side of town that nobody can get to; individuals hear odd commotions exuding from it around evening time. Layton and Luke meet Lady Dahlia and other relatives, including Simon, Gordon, and the family servants. Before they can talk about the puzzle further, an uproarious blasting sound is heard and Dahlia's feline escapes out of the entryway. Layton and Luke recover the feline and, after coming back to the manor, find that Simon has been killed and the case is now under scrutiny by Inspector Chelmey, a famous analyst. Chelmey at first suspects the two, however then lets them know to stay out of the examination. On the other hand, Matthew, the head servant of the Baron's manor, enlightens Layton concerning a little gearwheel that he found in the room close to Simon's body.