There's Mud In Your Eye

The battle against Naga's troops continues as Julie and Billy team-up to take on the Subterra/Haos hybrid Bakugan called Tricloid, who has been powered up by Naga negative energy. At first the two seem to be overpowered, but the adaption of each other's battle styles may be what's needed to help them realize how to work as a team again, especially when Naga…

Synopsis excerpt via Kitsu.