Original: While his aunt and uncle were having a party to celebrate the impending marriage of their son , he took his revenge by summoning a giant hail storm to demolish their house , killing 35 people , although the uncle and aunt are supposed to have survived .
Simplified: While his aunt and uncle were having a party to celebrate the marriage of their son , Mila took his revenge by summoning a great hail storm to demolish their house , which killed 35 people .