It doesn't try to be edgy or new, it’s content to be lazy sometimes, and it lets a few things slide. If you don't demand too much from it, it has a few pleasant surprises. Nicole Kidman stars as Christine, a 40-year-old woman with amnesia. She's able to store up memories during the day, but when she sleeps, everything is erased, back to when she was in her 20s.
Each morning she wakes up next to a strange man (Colin Firth), who introduces himself as Ben, her husband. He explains who she is, and shares a few important details, such as the fact that she's allergic to cashews. He shows her photos of their life together. He tells her he loves her.