Belly of the Beast is the 39th episode of the series and the final episode of season 3.
Plot
Finding themselves trapped within the Worm, the Hyperforce struggles to regain their composure after the day's past events. This doesn't keep them from their mission, however. As Antauri sets out, Sparx, Gibson, and Otto deal with the Skeleton King Droid. All the while, Chiro, separated from his teammates, ponders a way out, only to be confronted by an old adversary with vengeance on his mind. There's a chance that all might be lost for the Monkey Team, or the return of an old friend might restore the balance.