My dreams play like movies and its bothering me.

It started out as a dream about a class reunion. Only 4 of us showed up but we went on with the lesson anyway. The teacher told us about a plot to build a boat to escape in colder regions because the world was about to heat up so fast that humans in northern countries would die. We had to get information and gather supporters. It was basically a new Noah’s arc. While building the ship shit kept happening like people drowning. One of my classmates almost drowned but we were saved her in the nick of time. Around the port there was always this blonde kid with big glasses and his brunette friend playing with toys. I saw them throughout the entire dream and they laughed about the boat we were making. The boat was set and we planned to leave on christmas eve at 10 pm. I was with my brother (Jason) buying supplies but I ended up losing him in the crowd. I got lost in the city and came up to the freeway heading toward the port about a mile off. I got to the location and I meant this man who was hiding out in the port. We heard knocks at the door and the stranger claimed that he was Jason. Apparently the cops had been looking for him and they asked him to confirm that he was Jason. He assured them he was telling the truth but i knew he was lying. They shot through the door killing him instantly and stormed the port. I realized that I thought they were cops but they were more of a terrorist group. I ran through the port trying to get away but the group stabbed me several times before I could make it. I looked onward to see those two kids from earlier in their same spots playing with science stuff. They looked like they were making drugs. As I was dying I caught glimpses of children who died when the world ended and exactly how they died. The movie ended and I remember being upset leaving the theater. It was a grim ending. Then I woke up.