Disclaimer: I don't own Kim Possible or anything related
Kim was ready for him. She whipped out Wade's new gadget and hit the ball right back at Duff Killigan. "What?" Killigan said in surprise. He jumped to the left and barely avoided his own explosive. He sent another ball at Kim, which she sent right back. Duff grew frustrated and shot several balls at once. Ron yelped and jumped out of the way. Kim dodged some of them but whacked most of them at Killigan. It was his turn to dodge. Unfortunately for him, he wasn't as agile as Kim. One of the balls exploded near him and his kilt caught fire. "Aaaah!" he yelled and was forced to do the drop-and-roll technique. He stood up again, covered in sand. Ron took advantage of his inattention and ran towards the box. "Hey, that's mine!" Duff shouted and dived at Ron. But before Duff could reach Ron, Kim aimed a kick at him. Her foot made contact with his chest and he flew backwards, cursing. Ron tried picking up the box. "Man, this is heavy!" he grunted so he pushed at it instead.
Duff Killigan recovered from Kim's kick and aimed a blow at her head with his golf club. Kim ducked and tripped him. He fell down, again, and got a mouthful of sand. "Ptooey!" he sputtered. Kim was on him in a second. Her anger at Killigan for hurting Felix had come back full force when he had taunted her friend. She punched him, hard. Killigan's breath was knocked out of him and he gasped. "Next time, think twice before you hurt innocent people!" she shouted while continuously pummeling him. "Kim, get a grip!" Ron shouted, running to the two of them after setting the box someplace safe. "Stop!" he yelled, grabbing Kim's arms so she couldn't hit Duff with more punches. "Let go, Ron!" she shouted. "No, I won't!" he said panting slightly with the effort of holding her back. Kim was panting too, but she stood up, ceasing her attack on Duff. She knew that pounding Killigan senseless wouldn't achieve anything. Her hands still clenched into fists, she cast the thoroughly beat-up Killigan one last loathing look and walked away.
"What's gotten into you, KP?" Ron asked her when they got on the mini-plane. They were on their way back to Middleton, after tying Duff Killigan up and calling the police. "You've never given a bad guy a beating like that before." Kim didn't answer him. When she called the police, the chief had told her that she should've been proud for apprehending Killigan. She didn't feel proud. In truth, she felt terrible. Some teen hero she was! Beating up Killigan when he was already clearly down was wrong. She just let her feelings get in the way. Ron realized that Kim wanted some 'quiet time' so he relented with the questioning. He just gripped his chair and closed his eyes when the plane took off, hoping that he wouldn't get sick again.
A/N: Short chapter, sorry. Hope you like it though.