A grieving mother, Telly Paretta, is struggling to cope with the loss of her 9-year-old son. She is stunned when her psychiatrist and her husband tell her that she has created eight years of memories of a son she never had. But when she meets the father of one of her son’s friend who is having the same experience, Telly embarks on a mission to prove her son’s existence and her sanity.

A man, Joel Barish, heartbroken that his girlfriend Clementine 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 realizes that he still loves her, and may be too late to correct his mistake.

Douglas Quaid is haunted by a recurring dream about a journey to Mars. He hopes to find out more about this dream and buys a holiday at Rekall Inc. where they sell implanted memories. But something goes wrong with the memory implantation and he remembers being a secret agent fighting against the evil Mars administrator Cohaagen. Now the story really begins and it’s a rollercoaster ride until the massive end of the movie.

Michael Jennings is a reverse engineer and what he does is technical jobs for certain companies and as soon as he is done, his memory of the work he has done is wiped out. Now the longest he has been contracted is 2 months. But now billionaire, James Rethrick offers him a job that would last 2 years, maybe 3, and he promises that he will probably earn 8 figures. Michael agrees. Before beginning he turns in all of his personal effects. And when the job is done, his memory is erased and he learns he made over 90 million dollars over the three years. When he goes to claim it and his personal effects, he discovers that prior to the erasure of his memory he waived his rights to the money he earned and that the items that were given to him were not the ones he gave when he began. Later he is arrested by the FBI who say that he committed some act of treason and murder. It’s while he is in custody that he escapes using some the items that he was given. He later meets with a friend who gives him some information that helps him understand what is going on. And at the same time Rethrick for some reason wants him so he is being pursued by Rethrick’s people.