Dream About House Party Fight And Escaping

I had a dream me and my ex-bestfriend was staying in a house In a different town, when we went to town he went shopping and I acted like I had been there before because I have seen this clothing shop in my dreams before so I had some conscious and remembered I told my sister where to finding the nicest things in the shop . I bought a handbag and a hat. Afterwards everyone had a huge party, at the party a lot of my friends and family was there aswell as lots of strangers. There was something happening outside where people from this town had knifes and wanted to fight the people at our party. So all the men got ready to fight. My ex-bestfriend started holding a lit with fire price of paper under the fire alarm and then was going to throw it in the floor, I panicked and wanted to get all my stuff out of the house before hand otherwise I would have nothing. When the house set of fire Everyone ran out the exits and was either fighting or escaping. I ran upstairs to get some of my belongings and then ran back down I saw my auntie and she helped me get out.