As Anonymous wrote: " Paris, in the near future, Wilfried Max, director of a major advertising agency, acquires a smartphone app that allows you to travel in the past and in the future over 8 days". It's called "time jump" ,smart huh?
As for the near future ,a little piece of information is given to the viewer ,but you must be watchful to notice it: on a white board which depicts the shooting of a movie, you can notice "June 2030" ; so you have to wait ten years to buy this extraordinary gadget ,haven't you?
Although marred by an amateurish playing ,a not very credible principal (too old and not handsome enough for a man who is supposed to attract young women and to have a daughter who could easily be his granddaughter) ,and an overabundance of pointless characters , the beginning of the film is interesting.
As depicted by the hero, you can see your recent past in some kind of living hologram in which you can live your memories again :an evening with a philanderer and his latest lover ,his wife's birthday ; but this heart-throb who gave him the tip of the "time jump" tells him he has never "travelled" in the future yet for he is afraid (of what fates has in store for him,probably).
However, Wilfried takes the plunge : roll up for the future ! But what he discovers is frightening indeed : he is beaten up to death on the banks of the Seine river ,not a cheerful prospect.He becomes paranoiac ,as the fateful day is drawing near.
Unfortunately the denouement ,which I will not reveal, is downright disappointing ,given the good idea of this "time jump" .Sci-fi movies are very rare in France ,and this one ,in spite of a shoestring budget ,could have been an estimable attempt.