Éric and Patrice have been friends since high school. Over the years, they have both taken very different paths: Éric has become a hedonist, has a string of girlfriends and is always on the look out for a new one; Patrice has become a monogamous father with a very ordered life. After a drunken evening, the two childhood friends find themselves cast back into 1986, when they were 17 years old. This return to the past is a dream opportunity to try to change the path their lives will take. What will they do with this second chance?

Isabelle, HR of a large cruise company, made the mistake of choosing her boss as a lover. Before embarking on the maiden voyage of the new flagship of the fleet, though, he decided to disembark from their relationship! Some women take their revenge by poison, firearm, or slander. Isabelle chooses Remy a flamboyant, unemployed ne'er-do-well who flunked out in life on land, but after all is said and done, might have better luck at sea... She recruits him as leader of her plot and on this Palace of the Seas, Remy will first prove to be the worst nightmare of the CEO and Richard, the Cruise Director...then, little by little, he will change his life and that of all those who cross his path...

On his 50th birthday, a man who's been watching his weight, health and temper all his life suffers a heart attack. He's been doing everything he was told he should do and it still didn't help. He decides to turn the page and let loose.

François and Charlotte directed together a gourmet hotel and restaurant on the edge of the sea, but their marital relationship is not fixed beauty: obsessive hard, Francis wants his first star in the Michelin Guide while Charlotte, at the dawn of the quarantine, dreams of a first child. This already complicated situation will literally explode the day where Charlotte's first husband, Alex, disembarked in their lives while everyone believed him dead in the terrible tsunami of 2004...