Bar expert John Green heads to Oxford Inn in Royal Oak, Mich., to help struggling owners Bob and Mary get back on the path to success.

John Green visits San Diego to lend his expertise to failing hookah bar, Ali Baba's Cave. With a tired theme and tired owner, John has to figure out how to keep Ali Baba's afloat.

Owner Jen has struggled to balance running her dive bar and raising her children since losing her husband one year ago. John Green must turn the aging San Diego landmark, London's West End, into the ultimate nighttime destination.

John Green visits 12 Whiskey, a lounge in Fort Worth, Texas, that is located directly across from a college campus. Swindled by a third partner, the owners have no bar experience, limited capital and are in over their heads.

John Green visits Boxcar, a neglected establishment in Cedar Hill, Texas. Three squabbling siblings with no bar experience and mounting debts have dwindled their parents' retirement funds while running the bar into the ground.

John Green must transform Ringside, a fight-themed bar in Huntington Beach, Calif., that is struggling to stay on its feet. Now $300,000 in debt, owner Travis is unable to pay his bills.