Seventeen years ago, Tom was in deep pain for losing his newborn child. Now a 35 year-old bachelor owning the prestigious St. Patrick’s Academy, he seems to have a so-called contented and happy life. In the slums, a poor teenage boy named Bart hopelessly dreams of studying in the said exclusive school with poverty as a main hindrance. But after an unexpected revelation, his destiny slowly unfolds. What if one day, Tom learns that his son is still alive? And, what if Bart realizes that the academy he dreams of is rightfully his? Will the king finally find his lost prince?

The Blue Brothers - Tom, Carlos, David, and Shiro, are four half-brothers studying in an elite all-boys high school called St.Patrick's Academy. They find out that their father who also owns the said academy is going to die in three months, leaving the school bankrupt. As an evil competitor plans to do a hostile takeover and get the 'blue academy' at all cost, the teenage brothers need to find the four keys essential to unlock a hidden treasure buried by their grandfather years ago, for the academy to be saved.