How did we all somehow miss that there was talk of a fourth "High School Musical" movie? And that apparently Zac Efron starring in it was a real possibility? Well, this is the world we live in now. "'High School Musical 4' is much more than just an idea. Although there have been rumors for the past several years that it is definitely happening, it was not a possibility until Zac overcame what his friends are calling his 'dark period,'" a source tells Radar Online.

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Also, director Kenny Ortega "would only do the film if Zac Efron and Vanessa Hudgens were brought back as the leads." So how is Ortega getting Efron back to his singing and dancing roots? By being for him during his struggle to get sober. "When Zac was down in the dumps, Kenny Ortega was there for him every step of the way. Now that he has seemingly beaten the battle, Zac says he is ready to reprise his role in 'HSM4,'" the source says. 

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