Both boys love Hermia but she only loves Lysander. Helena loves Demetrius but he doesn't love her back. Hermia's Dad (the king) wants her to marry Demetrius to get wealthier, but instead of that Hermia and Lysander decide to run away. Demetrius follows Hermia because he loves her and Helena does the same ting to Demetrius.
Meanwhile the Fairy King Oberon and Queen Titania are having an argument because the Queen got given a little helper, Puck, but the King wants to use Puck to make the couples fall in love with each other. Tatiana is furious but Puck had already done it to Lysander instead of Demetrius and as soon as he wakes up, the first thing he sees, he will fall in love with.
As Lysander woke up the first thing he saw was Helena so he started chasing after her in love. Helena thought it was a joke since nobody liked her before and started to get angry. Since Puck positioned the wrong person Oberon sent him back to to make Demetrius fall in love with Helena.
Now when Demetrius woke up both boys have fallen in love with Helena and she is really mad because she thinks that they are just making fun of her. Hermia starts to het mad at Helena because she thinks that Helena is making them fall in love with her not Hermia.
For some reason Oberon didn't like the way this was going so he sent Puck to make Lysander fall in love with Hermia again and make everything go back to normal.
After all was resolved they came back and coupled up, Hermia with Lysander and Helena with Demetrius. Of course the Hermia's dad (the King) wasn't so happy but they didn't care.