The second season begins with Joe, Nick and Kevin arriving in Italy for the first stop on a European tour.
The brothers take part in a songwriting session and explain how they create melodies and lyrics.
Kevin, Joe and Nick share stories that inspired some of their songs.
The guys visit a children's hospital in Newcastle, England, and play basketball with a Special Olympics team.
The guys select a fan to record a song with Joe and then ask her to perform it on stage with the band.
The guys visit Real Madrid Stadium in Spain and challenge each other to a game of soccer.
The guys are forced to cancel a concert in Zurich, Switzerland, after Nick gets sick.
Joe visits famous European theaters to indulge his passion for acting.