The Isle of Man TT races enjoy legendary status, not just with motorcyclists but motor-sport fans worldwide. The event has created many heroes and even a few legends. "TT Modern Greats" highlights four of the greatest riders of the modern-era, four names that will live on in TT history. Phillip McCallen is the only rider to have won four races in a week. With 26 wins over 24 years, Joey Dunlop, the 'king of the mountain' is the most successful TT rider of all time. David Jefferies was the first to record a 'hat-trick of hat-tricks', an amazing three wins in a week, in three different years, and John McGuinness who also has won three TT's in one week is now most certainly the TT's current number one road racer. Follow these four heroes as they take part in the prestigious blue riband race of TT week and navigate the 37.73 miles and 250 bends of this dangerous yet spectacular course.