תקציר הסרט
Twenty years after his sudden transformation from caterpillar to pupa, Smash, the legendary guitar hero of the Bug City Crawlers, wakes up as a butterfly and realizes his band mates are now middle aged, and that he's in the age of their children.
Now that Smash is back, the old band reunites. Jeremy, the lead singer, has lived with his son Dylan in a house on wheels. Now, the drummer, Hopper, moves in with them, together with his wife Stella and daughter, Zizi. Soon enough the kids will form their own band.
Together they'll tour the bug world, from gig to gig, finding themselves in crazy adventures, which will teach them about friendship, life and their new, extended family. All this time, they have to overcome the difficulties caused by Folton, an evil talent agent, who is bent on signing up Smash and taking him away from the band and his friends.