The Idol's sensors picked up too many machines around to count, but they were small and were of no threat. The sensors also picked up some other people, and 2 unidentified alien races (specifically Zim and Nightmare Bitters). One seemed to be commanding the army of robots that was attacking the few people and the other alien, and, of course, because of Seina's luck, he stepped on one of the robots that was carrying a bomb.