Final answer:
King Oberon is angry with Queen Titania over a dispute regarding a changeling boy whom Oberon wants as his attendant. Titania's refusal leads to Oberon using magical means to resolve the dispute in the play 'A Midsummer Night's Dream'.
Step-by-step explanation:
The fictional character King Oberon is angry with Queen Titania because of a dispute over a changeling, a child whom Titania has taken as her attendant. Oberon wants the boy to become one of his followers, but Titania refuses to give him up, leading to Oberon's anger. In William Shakespeare's 'A Midsummer Night's Dream', this conflict causes Oberon to seek a magical solution to force Titania's hand, resorting to the use of a flower's juice to make her fall in love with the first creature she sees upon waking. This plot element adds to the comedic complications and character interactions of the play.