It's finally summer time! Our little rockers are all grown up and now 16 and going on vacation on a fancy cruise. What happens when they find a little surprise for them at their room. That surprise being The Newmans. That's right! Looks like Grojband will be staying with some un wanted guests. They take a stop at an island for a "quick" visit. What happens when the boys walk off and they all get stranded. Looks like their visit will be alot longer than they hoped for. Will they find away off the island and back home? Will they become friends and work together or keep acting like enemies? What will happen if they have to stay forever?!