I will find the flower to make Titania fall in the love with the first creature she sees.
I want the young boy you have adopted
I will put the love drops into to Demetrius's eyes
Hermia loves Lysander but her father, Egeus, tells her she has to marry Demetrius. Helena loves Demetrius but Demetrius does not love her back.
Titania, the fairy queen adopts a young boy to take care of. Oberon, the fairy king gets very jealous that her attention will be towards someone else. He tells Puck to find the flower with the juice that will make Titania love a creature. Then he hopes Titania will give him the boy in order to receive the antidote.
Puck finds the flower and is told to also put some drops into Demetrius's eyes to make him love Helena, but pucks accidentally puts the drops into Lysanders eyes. When Lysander wakes up he sees Helena and falls in love with her.