Katie and Jess share an unbreakable bond, always standing by one another. However, when Jess embarks on a serious romance with Nick, a renowned crime novelist, Katie becomes skeptical of this seemingly ideal partner. Although she wishes to celebrate her friend’s joy, her protective instincts take over. Katie’s fixation on Jess turns dangerous, and it falls to the now-maligned Nick to reveal the truth about the best friend before disaster strikes.