 Philadelphia s number one film son returns to the big screen in  Rocky Balboa . Rocky is struggling to come to terms with his life after he retires. Adrian s passing has left Rocky a widower who lives more in the past than the now which strains the few relationships that he has, namely his son Robert Jr. and his nutty brother-in-law Paulie. But when a computer simulation pits a in-his-prime Rocky vs. the current undefeated champion Mason Dixon Rocky becomes focused on a return to the ring to let loose the  beast  one final time.