Mabel, a quiet office worker still grieving her grandmother, discovers a mysterious silver locket among the old woman's belongings. When she puts it on, the locket begins to change her — stealing from the women around her and giving to Mabel. At first it's subtle, easy to ignore. But as the changes accelerate and her coworkers start to notice, Mabel faces an impossible choice: give up the power that's finally making her feel seen, or embrace what the locket offers and accept the cost.