Ozzy is hounded to do press, promos and photos for his final world tour; needing to stay behind in Los Angeles for his baby's birth, Jack conspires to convince his sister, Kelly, to take the wheel and hit the road with Ozzy.

With Jack stuck in Los Angeles waiting for his baby to be born, sister Kelly hops into the driver's seat; in Arizona, Ozzy and Kelly tour the Biosphere and bond over a night of beauty masks.

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Following the birth of his baby, Jack returns to traveling with Ozzy and his sister, Kelly; in New Mexico, the group samples chili milkshakes and learns to make pistachios; Kelly finds a way to make a profit from Ozzy and Jack's guy humor.

In Missouri, Kelly takes the guys to eat some fresh ice cream, while Jack arranges a trip to an "explosion school"; Jack and Kelly plan touching surprises for Ozzy; old nemesis "Robert the Doll" returns and threatens to derail the trip.

For the first time in World Detour history, Kelly heads the trip. This time it's to Nashville, Tennessee. Jack and Ozzy are backseat to some very "Kelly" activities including, a drag queen brunch, visiting Manuel, Nashville's iconic fashion designer, and restyling Ozzy's Madame Tussauds' wax figure. Not entirely excluding her father and brother's interest, the Osbourne trio visit a chocolate and record pressing factory. Kelly plans a musical surprise for Ozzy, and squeezes in a quick trip to the largest ashram in the country where they meet a Guru with some helpful ...

With Pearl in tow, Ozzy and Jack head to Alabama where Jack's childhood dream will be fulfilled at Huntsville's Space Camp; before they launch into space, Ozzy has a surprise for Jack -- a visit with Dave Turner, the Rock and Roll Redneck.

In Florida, Jack and Kelly meet with a chocolate sculptor who makes a bust of Ozzy and visit the famed Fountain of Youth to retrieve some magical water; a psychic attempts to remove any bad luck before Ozzy takes the stage at a music festival.