In this episode, I analyze the HNL Control Room Teaser released on May 5, 2021. This analysis, however, is more about the aria, "When my sweetheart returns," which is in the famous French opera, Nina, or The Woman Crazed With Love. "When my sweetheart returns" is the background music in the HNL teaser and, as we Stranger Things fans know, there is nothing included in this show or its marketing that doesn't have a theory (or 1,000) surrounding. I attempt to analyze how this song could potentially give us answers about season 4 and what becomes of Eleven this season. Enjoy!