"Robotech II: The Sentinels Halloween Special 1" was a special issue of Robotech II: The Sentinels. This special issue takes place between "Robotech II: The Sentinels, Book 4", issues #10 and #11. The comic was released the same day as Book 4, issue #11. While it's the next Sentinels tale in the comics' chronology, it's merely a side-story that doesn't drive forward any of the ongoing storylines.