Booster and Michelle return from a mission to find Rip under the control of a Starro spore. The spore takes Rip back to 14th century France, where it uses fear of the Black Plague to spread more spores and take over the world. Booster and Michelle follow and stop the Starro spore's plans, sending it back into the timestream, where it takes control over Chronos and Lady Chronos. The controlled villains come to the present and blackmail Booster into accompanying them into the near future, where they toss Booster into a lake of Starro spores.