I had a crazy dream, which is weird because I never remember my dreams. I can remember 3 dreams I've ever had in my life and the previous 2 we're only because I was taking a smoking cessation drug that was prescribed by my doctor. Last night I hadn't taken anything and I have not in years. Any help interpreting this would be greatly appreciated.

I dreamt I was being kept hostage on this weird property for a long time. It felt like I had been kept there for years. I wasn't held at gunpoint or anything, but I had this understanding that if I left I would be killed by this young girl (early 20's) and this other unknown entity that later turned out to be a dog, but I didn't find that out until the end of the dream. Somehow I got my cellphone and texted my dad that I was being held at the "old farm" and it was dangerous. 3 people showed up but I only recognized one of them as a high school friend that I haven't talked to or seen for like 8 years. The two unknown people were killed by the girl, and then my high school friend said he would fight the unknown thing if I fought the girl. The girl and I fought into this weird trailer (very similar or the one I grew up in). I thought I had to fight her off and maybe knock her out to leave but we got into this dark room and she ended up stabbing me in the stomach with this crazy dagger. I remember then I realized I had to kill her too, so I spun her around and grabbed this flimsy tube (almost like a small hose) and stabbed her from her armpit all the way through into her chest and where her heart would be. After that I remember me and the girl suddenly being outside standing up watching my high school friend and the dog (this was the first time I saw it) fighting. The girl and I were both bleeding and dying, but we were oddly calm standing there watching the fight. The dog was black and huge, like 10 times the size of a normal dog. I remember the fight going badly for my friend, and I suddenly realized that if I didn't die from the stab, once the dog killed my friend it would definitely kill me so I had to help. I was able to run into the fight and grab and pin the dog down. It was huge compared to me, but somehow I was able to keep it pinned. My friend asked me what to do, and I told him I would hold it but he would have to kill it. I said stab it like 5 times and he kept saying I don't have anything to stab it with. I told him very calmly to go to the kitchen, grab a knife, and stab it. He did what I said. As the dog was stabbed it suddenly shrank and turned into my black lab and then I woke up. I didn't wake up like it was a nightmare, but like it was something that just happened.