Through quizzes, blind-tests, happenings, "Welcome Back" makes you relive the eras that marked us, all on an XXL set redecorated with each broadcast. Totally revamped in the fashion of the time, 6 personalities divided into 2 teams will compete and be tested on their knowledge of a specific era to garner as many points as possible and raise the jackpot. Do you remember the most cult hits, the most unexpected inventions, the craziest fashion, the most glamorous couples, the years that marked us? Each of the two teams will play for part of the public present on set. And the winning team will allow its one-night supporters to win gifts.