Every time my stepbrother brings home a girlfriend, I seem to get along with her a little too well. He struggles to understand what she wants, while I pride myself on noticing the little things. Tonight, though, he’s determined to make his date special, so I show up with her favorite smoothie and two straws. What begins as a playful interruption soon sparks a fresh round of rivalry, jealousy, and unexpected confessions, leaving all three of us wondering where the evening will lead.