(Lola) welcome to london, GRACE LE DOMAS! did anyone ever tell you that you look just like SAMARA WEAVING? well, no matter, we hear that you are 30 and working as a WAITRESS. we also hear that you currently HAVE your memories from READY OR NOT and have a tendency to be COURAGEOUS as well as VINDICTIVE.
Trigger Warning: Death, Murder, Devil Worship
Not much is known about Grace's background, but she mentions that she was a foster kid, and never knew her family. As an adult, she would fall in love with a man named Alex, who was a member of the Le Domas family and ran a game company. Grace begins a romantic relationship with Alex and becomes engaged, but he doesn't meet the rest of his family until the beginning of the film. Though she loves Alex, she is intimidated by his family's wealth and feels that the family doesn't particularly like her. Unbeknownst to Grace, Alex and his family committed human sacrifices for the demon Le Bail to make the in-laws a part of the family.
Grace marries Alex and meets the rest of his family, and after the wedding, goes to their estate where Tony explains that their ancestor, Victor Le Domas made a deal with Le Bail. Victor's deal was that every new member of the Le Domas family must draw a card from Le Bail's puzzle box, and the Le Domas family was given a fortune. Grace draws out the "hide and seek" card from the puzzle box, and goes into hiding while the Le Domas arm themselves to kill Grace before dawn. While hiding, Grace witnesses Alex's sister, Emilie, murder a maid that she mistook to be Grace. She is found by Alex, who informs Grace that his family was cursed by Le Bail and that the "hide and seek" card forces the family to kill the newcomer before dawn or they will be killed.
Alex allows her to escape by disabling the house's security, and Grace can escape with the assistance of Daniel, who has become disillusioned by his family's ethics. She is stopped by the family butler Stevens but manages to escape outside the estate after nearly being caught by a third maid. Outside, Grace goes to the stables where she sees Georgie, who shoots her in the hand and she falls into a pit of corpses. Getting out of the pit, she tries to stop a motorist but fails, and finds a car where she calls police via the car's onboard system. The operator shuts off the car when they inform Grace that the car was reported to be stolen, and she is then chased by Stevens once again. Stevens tranquilizes her, but she awakens and fights him before he crashes his car, killing him.
Before she can escape, Daniel captures her and brings her to the family, who are celebrating by drinking from the ceremonial cup. It's revealed that Daniel put non-lethal doses of hydrochloric acid into the ceremonial cup, causing the Le Domases to vomit blood while he frees Grace from her binds. Before she can escape, Daniel is killed by Charity for his treachery but is immediately killed by Grace. She then goes to kill most of the family but is captured again by Alex after he realizes she doesn't trust him and will leave the estate. Though she gets tied up, she manages to break free right at the strike of dawn, which leads to the Le Domas family being killed via imploding. Grace starts to laugh at the deaths, and refuses Alex's attempts to forgive, causing his death. Before she leaves the house, Le Bail briefly appears, giving his respect to Grace by giving a head nod. Leaving the house and sitting on the steps, Grace smokes a cigarette as the police arrive. When the police officer asks Grace what happened, she simply replies "In-laws".
