My dream last night was quite bizarre - it was sometime in the future, and two alien races had appeared and conquered Earth. One of them was an advanced race of aliens who had already replaced most of their bodies with cybernetic enhancements, the other seemed like a race of shapeshifters. I was living in an old school building with some other humans, when it was announced that a defector from the Master race had told us how to avoid the next destruction of the obsolete - we all drank this weird orange liquid, which made us invisible to their sensors. As it didn't work on the shapeshifters, some of our "human friends" were executed by the local militia, while news of our plan had reached the higher-ups in the Master race, who retaliated by destroying a suburb of one of the cities. This was the part where I knew it was a dream - because "destroying the city" looked an awful lot like a clip from Power Rangers, and blood and large human skuills just spurted out of the ground where the Master robots were jumping up and down.
Just as their assassin units arrived in our compound, I woke up.