Time travel is one of the biggest mysteries in the whole world. Human beings keep searching for that powerful weapon to control destiny and be able to manipulate success and defeat failure.

Movies explore this phenomenon in so many ways, travel to the past with the intention to change the future and avoid world war against machines (Terminator, Terminator 2) Travel to the past and the future in order to create a better possibilities to a family and also avoid extinction (Back to The Future and their sequels) Time travel control to avoid criminals to manipulate or alter of the past (Timecop) and even time travel in the search for a better life in a better time period( Midnight in Paris)

In the film About Time (Richard Curtis) Time (Domhnall Gleeson) discover from his dad that the member of his family are capable to travel thru time. His father (Bill Nighty) warned him that the power to control time is delicate, also explain the consequences of doing so. Time move to London pursuing a career as a lawyer, and that's how he met Mary (Rachel McAdams) The attraction is instant. he collect her information to call her again. Back home his landlord, a playwright is depressed because his opening play was a disaster because his main actor forgot his lines. Time decide to go back in time to help him. Suddenly he released that he altered his future with Mary, because we never met her. After a whole series of time travels he finally was able to met Mary in the right moment and blend the present and potential future for him and Mary.

Tim, realize that you cannot change future constantly to make it perfect, without alter others destiny, from Tim sisters alcoholism, to some other family members future.

About Time is not a great film, is just a romantic comedy, with some tone of drama. The movie explore another side of time travel, the consequences of controlling this ability, the chaos if manipulating destiny and avoid living life day by day, expecting the unexpected. That's the real message of this film.
Life is simple, but also complex, you cannot make your life perfect, you have to enjoy it the best way possible.