Years after the events of 'Martian Successor Nadesico,' Akito and Yurika have vanished, leaving Ruri in command of Nadesico B. With the emergence of Boson Jumping, a new transportation network called the Hisago Plan has been established, holding the key to Bose particles' mysteries. However, when a Martian faction launches an attack, chaos ensues, prompting the former Nadesico crew to return for a crucial, unauthorized mission. As the race for Boson technology intensifies, can this eclectic team of heroes save the day? The fate of all hangs in the balance, including the unanswered questions surrounding Akito and Yurika's disappearance.