The neighborhood watch representative asks Soun to catch the panty thief, who is none other than Happosai. When Soun finds he’s not up to the task, Ranma decides to take on the challenge on his behalf.
Ranma 1/2 39: Kissing Is Such Sweet Sorrow! The Taking of Akane's Lips
Ranma 1/2 40: Bathhouse Battle! We're in Some Hot Water Now