The band take a trip to America to work with some top US producers.
Tulisa and Fazer travel to New York taking in the sights and catching up with Tinie Tempah at his gig, before heading out to join Dappy in the West Coast.
The band are still enjoying their time in Los Angeles, working in the studio and soaking up the lifestyle.
Fazer hires the car of his dreams; the band have their first meeting at Def Jam records; and Tulisa wows the LA paparazzi as she hits the red carpet
Still on their LA mission, the trio head to the studio to create their 'three minutes of magic'.
With manager Jonathan keeping close tabs, do they have what it takes? Later, Dappy shows his emotional side.
N-Dubz are back in the UK to audition dancers for their first nationwide arena tour.
Dappy reveals a new tattoo and Tulisa visits a beauty salon
With the Isle of Wight Festival on the horizon, Dappy gets struck down with a mystery bug and Fazer misplaces the band's music
This episode features all the series highlights of Dappy, Tulisa and Fazer's time in America... and beyond.