In 'Friendzone,' Thibault (Mickael Lumiere), who works as an orderly at a hospital, stays at a resort for his friend Titi's (Jordan Tortorello) female bachelor party. Late at night, he goes skinny dipping into the sea and ends up meeting a beautiful girl named Rose (Eva Danino). She is stung by a fish, and Thibault helps Rose get to her room and eases her pain. They talk, and Thibault learns that Rose has recently broken up with her boyfriend, Bruno. Rose designs baby products. After returning home, Rose texts Thibault to make plans for the evening. Rose takes Thibault with her for shopping, something that Bruno never did with her. Bruno is a rapper and has a record label.Over time, Rose and Thibault grow close (she loves his foot massages, but he never makes his move), and Thibault considers proposing. However, he realizes that Rose only sees him as a friend and is left heartbroken. Thibault's friends, Alexandra (Constance Arnoult), Lulu (Fadily Camara), and Maud (Manon Azem), point out that he failed to make an excellent first impression (they feel that Thibault should have made a move on Rose on their first night, and by not doing so maybe he gave the impression that he didn't like Rose) and ended up getting friend-zoned by Rose. They decide to give Thibault a complete makeover and suggest he cuts off contact with Rose for the time being.They teach him to stand up for himself and have some self-respect. Maud puts Thibault through a fitness regime with early morning jogs. She also teaches him to articulate his true feelings without trying to be nice to everyone. He can't be intimate with a woman, if he is not 100% sincere. Lulu teaches him an African dance. Thibault is awkward and clumsy. Alexandra teaches him how not to reveal everything about himself and create some mystery. They also give him tips for good sex. Use the thumb. Slowly, through a lot of practice and hard work, Thibault gets better.With the help of his friends, Thibault's personality is completely changed, and he manages to get the phone number of Jennifer (Eloise Valli), a famous social media influencing person. Thus, his transformation is complete, and Thibault is ready to re-enter Rose's life. However, when he meets Rose, Thibault finds out that she has patched up with Bruno. It is revealed that Bruno used to date Maud. Bruno is rich and is helping Rose launch her new kid's collection with a big PR splash. Once again heartbroken, Thibault calls Jennifer, and the two hit it off. Both are into public service, don't like casual hookups, haven't had sex in a year and so on.Despite Jennifer's elitist attitude and intense personality, Thibault begins a passionate relationship with her. Jennifer isolates Thibault from his friends and uses him to do all sorts of odd jobs for her. But the thumb is being used to great effect. But soon, Thibault's life is all about selfies and his fridge is full of only greens. Soon, Thibault is tired of Jennifer, but can't get rid of her. Rose comes to meet Thibault at the hospital, but Thibault tells her off and says being her friend is not his job anymore.Knowing that Thibault still has feelings for Rose, his friends make a plan to use Jennifer to make Rose jealous. Simultaneously, they plan to show Rose that Bruno is not suitable for her. Their scheme ends up producing disastrous results. Maud, who is a lesbian, will act as a trap for Bruno. Bruno hasn't stopped texting her since he saw her at Rose's PR event. The girls ask Thibault to invite Rose to a costume party. Rose has an offer to work for a big fashion brand in Spain, but Bruno has his life in France. There is tension in the relationship.At a party, Thibault's friends are executing their plan of hitching Thibault with Rose. However, things get out of hand when Rose sees the true colors of her boyfriend and leaves. Maud goes practically half naked in front of Bruno to entice him. They start dancing and Lulu takes pics of Bruno trying to rub his penis all over Maud's behind. Bruno tries to impress Maud with the size of his penis and Rose sees this.Thibault chases after her and comforts an upset Rose at her apartment. Thibault tries to kiss Rose, but she feels he is taking advantage of her vulnerability. She throws him out, and Thibault breaks up with Jennifer. Thibault lashes out at his friends for giving him crazy advice and turning him into a mean and detestable person.Later, Thibault slowly reconciles with his friends. When he learns that Rose is moving to Spain, Thibault musters the courage to confess his true feelings and arrives at her apartment. He accepts that he was playing games with Rose in order to win her heart. Thibault admits that he is done pretending to be someone else. In a grand romantic gesture, Thibault yells "I love you" from atop a truck, and his sincerity wins Rose over. Thibault and Rose share a kiss as his friends and onlookers rejoice. The movie ends with Thibault and Rose enjoying each other's company in Spain.