Betty and the crew have an important mission—towing the incredibly large Querzanian Diamond across a dangerous galaxy in order to avoid galactic warfare—but Sparky has gone on a cruise for vacation. He soon finds out that the so-called "cruise-ship" is actually Greenbeard's pirate ship! Greenbeard claims to have "gone straight", but once Sparky tells him about the diamond, he is determined to have it. On Earth, Betty has found a model replica of her spaceship at a yard sale that she really enjoys, but can't afford the money to buy it./ Admiral DeGill calls Betty, Sparky and X-5 to attention after his office has been trashed—apparently by a space-gang called "The X-Rays". DeGill wants them to go undercover as rebels and find out what they're up to. Being an X-Ray is fun, at first...but what happens when the group of punks decide to interfere with Maximus? Meanwhile, on Earth, Duncan has developed a crush on Paloma due to her kindness towards him and won't leave her alone, so she resolves it...in her own special way.