Yuki, the Sexaroid Medical officer assigned to support the crew of Big One, doubts her worth as a fellow crew member. When news breaks out of a prison train escape at an isolated Space Junction, Captain Bulge is forced to alter Big One's course and tend to the situation. It is a race against time as the Sirius Platoon splits up to find the four desperate escapees. Manabu, teamed up with Yuki, are on the trail of the two prisoners. Will Manabu prove to Yuki that her worth is far greater than she expected?