Mike is the man of the hour at school, and as a basketball player, he was originally offered a scholarship to attend High School Musical. As a basketball player, he was offered a scholarship that would have guaranteed him a place at university, but he gave it up to be with his girlfriend, Scarlett (Leslie Mann).
20 years later, Mike is a middle-aged man who has accomplished nothing. He's broken up with his wife Scarlett, he rarely ****speaks the same language with his kids, and his job at the drug company is boring as hell. Frustrated, Mike goes back to high school to reminisce about his former glory. There he meets a janitor, and as they chat, Mike confides in him his desire to be 17 again, and how life would be very different if he had it all to do over again, and if he never gave up on scholarships and opportunities to further his education.
On his way back from school, Mike overheard the mysterious janitor preparing to jump into the river. Surprised Mike rushed to jump out of the car to save him, did not expect the janitor suddenly disappeared, but ran too fast Mike rushed into the river, and this miraculously turned into the appearance of 17 years old ......