17 Again (2009)

In 1989, Mike O'Donnell (Zac Efron) was a big success in high school. He seemingly had it all, when, right before the championship basketball game, his girlfriend Scarlet Porter (Allison Miller) informed him she was pregnant. In that moment, he made the decision to throw everything away (including basketball and a chance at a scholarship) and proposed to her.

About twenty years later, Mike's (Matthew Perry) life has come to a standstill. Scarlet (Leslie Mann) has separated from him, forcing him to move in with his geeky and wealthy best friend Ned Gold (Thomas Lennon). His job is going nowhere, and his kids Maggie (Michelle Trachtenberg) and Alex (Sterling Knight) want nothing to do with him. While visiting Hayden High School to reminisce about the life he threw away, he encounters a mysterious janitor (Brian Doyle-Murray). On the way home, he sees the janitor standing on the edge of a bridge - apparently about to commit suicide, Mike runs towards him, but his path is blocked momentarily by a passing truck. When he reaches the edge, the janitor is gone, and there is a strange vortex below the bridge. Mike slips and falls into the vortex, blacks out, and awakens back on the bridge. When he gets home, he discovers that he has been magically transformed into his 17-year old self.

With Ned posing as his father, Mike enrolls at Hayden High as "Mark Gold". He believes he has been given the chance to live his life over again, "but to do it right". Then he discovers that Maggie is dating the basketball captain Stan (Hunter Parrish), who is bullying Alex. He realizes that his real mission is to help his children, and makes friends with both Alex and Maggie. With "Mark"'s help, Alex gets a place on the basketball team and the girlfriend he desires. "Mark" comforts Maggie when she is dumped by Stan, who was pressuring her for sex. "Mark" also meets Scarlet. He helps her decorate her garden, gaining a new appreciation for her, and dances with her before she goes on a date (to the song that he and Scarlet danced to at their wedding). (Alex asks him "Do you dance with all your friends' moms?") "Mark" and Scarlet clearly felt a connection as they danced , and might have been about to kiss, when Alex walks in on them. At first Scarlet seemed uncaring that her son is right there, but then all of a sudden she feels embarrassed and tells "Mark" that she is Alex's mother and that this is inappropriate.

Meanwhile, Ned is attracted to the principal of Hayden High, Jane Masterson (Melora Hardin). Although his initial attempts to 'peacock' her fail, they soon bond over a love of The Lord Of The Rings. However, when he takes her back to his house, they discover an out-of-control party raging there. To celebrate Alex scoring the winning basket in a game, "Mark" is throwing a victory party. Scarlet appears, looking for Alex, and Mike's tells her that Alex could be having a girlfriend by the end of the party and brings her up to the balcony to show her. As they are talking, Mike's feelings for her are reawakened, (especially after she tells him "he's really become a part of the family). But when he kisses her, she is appalled, and slaps him and calls him a "weirdo little man child" even though he chases after her and tries to tell her that he is Mike. This exchange is witnessed by Maggie and her friends, who are all disgusted, especially since Maggie has become smitten with "Mark".

The next morning, Ned reminds Mike that it is the date of his divorce hearing with Scarlet. "Mark" appears in court to read a letter from Mike O'Donnell. Scarlet is touched by the letter. But then she sees that the "letter" is really just a piece of paper with directions on it, and realizes that "Mark" spoke extemporaneously. Later, at the championship game, Mike makes a gesture which she recognizes as his. Realizing that she is in the same situation as twenty years earlier, she flees the scene. Mike follows, handing the ball to Alex, who goes on to make the winning shot. The janitor catches sight of Mike and changes him back into his adult self. Mike promises Scarlet to spend the rest of his life making it up to her. Scarlet and Mike kiss and reunite.

In the end, Mike happily reconciles with his family, and becomes the coach of the Hayden High basketball team, while Ned and Ms.Masterson seem to have a "relationship".

Source: http://en.wikipedia.org/

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