Wonderful little story about being stranded in a small town with a big problem. First and foremost, the effects were excellent. I really enjoyed the delivery of NPC dialog, as well as the visual effects during several action sequences. This map seamlessly mixes light physical challenge (jumping, minor combat) into the overall story. Visual build was clean and concise, with good detail. I'm not sure your character is fully motivated to take the actions, but the cutscenes and final sequences had me laughing aloud and clapping.
Thanks for the review and I'm glad you liked the map so much . I liked your video and put a link to it in the main post.
Do you have all of your command blocks in the worldspawn chunk? Do you move it? A common cause of this issue is chunks with redstone getting unloaded.
Yup, I moved the world spawn to 0,0 and centered all the redstone around it. I don't think it's a redstone chunk issue because I was able to examine someone's map after the NPCs didn't show up & the command block did spawn the NPCs but the following command blocks weren't able to target them.
I'm guessing the NPC mobs despawned but NoAI mobs aren't supposed to despawn. I even tested that theory but was unable to reproduce it. The mysteries of Minecraft