Nikki and her bandmates are looking forward to an awesome summer on tour as the opening act for the world famous Bad Boyz! Nikki is a little worried when her frenemy, MacKenzie Hollister, weasels her way on to the tour. But she has a total meltdown when she learns that MacKenzie is her new roommate! Will Nikki survive her dream tour turning into a nightmare?! 9+ Nikki's summer is packed with drama in this 14th installment of the bestselling Dork Diaries series.