So, Ron's duty with Yamanouchi School wasn't over yet - it's believed that Monkey Fist returned to revenge by capturing their Master Sensei! Yori-san came back - but this time Kim is also notified.
Episode 62 Kim Possible: Monkey Fist Returns
Original Name: Gorilla Fist
OK. Normal morning, normal breakfast. and Ron, like normally - eats like a horse. His process only stops when something unidentified appeared in the canteen and wrote his name in the wall. AAHH!! Just a ghost is bad enough, now it even calls Ron. Is it worth for him?
Though Kim tried to comfort Ron and ensured there's no ghost, he still couldn't keep cool and calm down. Until Kim went out, everything seems under control; Ron can be safety for a while. Then someone appeared and got in his house: A ninja! Yeah, remember me Ron, Yori-san! Ok, quick welcome, and now, mission's waiting. Yamanouchi needs Ron's help again, to find their Master Sensei. And like before, it's his own objective, Kim wasn't allowed to know this! But, unless there weren't Ron, he failed to hide this secret again: First by blow up his campaign, then Yori's cover! Kim, however, got envy because of it, and she's now tracking down Ron's trial. Oh men, real Green Eyes Monster!