guys family and girls family are enemies
guy meets girl at party - fancy dress, masked whatever
they kiss
he finds out who she is and goes to see her
she family tells her to marry someone else
she married romeo
he sneaks into her house and they sleep together
soemthing happens and juliets brother is killed by romeo (soemthing like that)
he runs away
juliet takes soemthing that makes her look dead to get out of her other wedding
someone finds romeo and tells him she's dead
he goes back and kills himself, before he can be told she's not dead
she wakes up to find him dying next to her
she kills herself
i think the families settle their differences after that