A grieving mother lures her daughter's killer into her smart home in order to take revenge, becoming involved in a distorted game where life and death are at stake.

For Gwen, it's always 1999. The face in the mirror is unfamiliar and her partner isn't recognizable to her despite waking up together every day. Joe's past is coming undone and his partner, Sarah, fears she will be forgotten. A doctor refuses to give up on them, determined not to let them unravel.

Through a series of unfortunate events, three mummies end up in present-day London and embark on a wacky and hilarious journey in search of an old ring belonging to the Royal Family, stolen by ambitious archaeologist Lord Carnaby.