The episode starts with SpongeBob receiving a letter with a video in it from the local postman. SpongeBob inserts the video and it says that SpongeBob is invited to Karate Island to be crowned "King of Karate". SpongeBob is excited and brags about it to Sandy, Sandy decides to come with SpongeBob to "Check It Out". When they arrive, they hop off the boat and proceed to meet a supposed "Karate Legend". He invites them both in and continues to tell SpongeBob that he is truly the King of Karate. Sandy becomes suspicious when the supposed Karate Legend tells SpongeBob to sit on his throne leaving Sandy to sit on a small wooden chair. Sandy then talks to SpongeBob about him being the supposed "King of Karate". SpongeBob keeps bragging about his accomplishment, which makes Sandy angry and causes her to leave. Suddenly, metal cuffs surround SpongeBob's hands and trap him from escaping. finally, the supposed Karate legend tells SpongeBob that he is...