The Batgirls are back...but some will be called to leave Gotham City behind. Alysia and Felicity head for Hawaii to investigate the mysterious radio signals causing trouble across the world, but they find a new voice for the revolution! But their findings leave the Bombshells divided! The Batgirls are determined to track down the source of their friends' misfortunes, and their investigation leads to an eerie spit of land, where a lone radio tower projects a deadly signal that curses all who hear it.