In Shakespeare’s Midsummer Night’s Dream, The faery King (Oberon) and Queen (Titania) are fighting, which is causing terrible disruption in the mortal world. Oberon, in order to get his way, enchants Queen Titania, causing her to fall in love with the first creature she sees, which he makes sure, is a village simpleton whose head has been turned into that of an ass (Bottom) In all of this he is aided and abetted by his servant, the mischievous sprite Puck, who spies for him to make sure that all is going well with his nefarious plan. Once he has achieved his ends, he lifts the enchantment from Titania, who forgives him and returns to him (thus exchanging one ass for another!)