Henry is a player skilled at seducing women. But when this veterinarian meets Lucy, a girl with a quirky problem when it comes to total recall, he realizes it's possible to fall in love all over again…and again, and again. That's because the delightful Lucy has no short-term memory, so Henry must woo her day after day until he finally sweeps her off her feet.

Joel Barish, heartbroken that his girlfriend underwent a procedure to erase him from her memory, decides to do the same. However, as he watches his memories of her fade away, he realises that he still loves her, and may be too late to correct his mistake.