Kelsey accepts a quest from the Elders of the Creek; she readies herself to face a terrifying opponent.
The episode begins with Kelsey making a mud doll and then destroying it, which leads to one of her dramatic narratives. Her narrative is interrupted by JP and Craig, who run towards a mysterious bag next to the stream, which contains sticks. To discover what it is, the trio goes to the Ancient Rock and greet the Elders, who were having a moment of discussion, which Barry tries to deny. JP gives Barry the bag with sticks he found and Barry says they are "gravity sticks" and gives them to David who juggles with them, but Mark removes the sticks because it bothers him that David does great things when he is angry. Mark shows that his sword was stolen, which is the reason for his bad mood. Upon hearing the description of the sword thief, named Jerry, Kelsey offers to retrieve it and leave the rock.
Outside, standing on a bundle of dirt and logs, Kelsey has a short sequence in which she takes pride in having a battle, and has fun making JP and Craig wait to choose them as coaches. During that week, Kelsey trains very hard with them, doing things like carrying the trunk chair with a rope tied to her back, breaking fruit with her sword and doing exercises on Duane's treadmill. On one of those days, Craig mentions how much she changed in those days, while hitting her mannequin, but JP suggests that her opponent may also have trained, and much more than her, and continues to give importance to the fact that he could lose, which causes Kelsey to feel insecure about herself. That night, Kelsey has a hard time at home reflecting on her shortcomings and at bedtime, she worries a lot about losing and being blamed for problems with Arroyo security.
The next day, Craig and JP arrive at the Old Rock and the Three Elders come out, but at first they worry that it is Jerry. Kelsey does not arrive so early, and Mark already says that he sure surrendered and is not brave, but to his surprise, Kelsey arrives, although very depressed about the previous night. Meanwhile, the Elders show Kelsey the trap they created to lure Jerry: a fake birthday party with cake. At that moment, Jerry appears above the Elder Rock, seeing the shadow from afar, which seems to be of a large and muscular man, Kelsey is scared, but Jerry advances and turns out to be only a 9 year old boy with a camping backpack very big. This makes Kelsey trust her ability to battle with someone younger and asks her to hand over the sword, but when she takes it out, Kelsey discovers it's a huge sword, and Jerry argues with Mark for the movie tickets he did not pay him, which was the reason why he stole the sword.
Determined to fight, Jerry jumps and Kelsey dodges, while the Elders sit on the rock to watch the fight. Kelsey is paralyzed in front of Jerry by her extreme insecurity, until Craig and JP begin to imitate her as in their narrative sequences and encourage her to fight, convincing her that he is strong and capable of defeating Jerry. Kelsey jumps from a tree and falls on Jerry, then throws him to the ground. Jerry runs to Kelsey with the sword and she jumps very high, then falls with a lot of force and breaks the sword of the Elders. Kelsey is happy to beat Jerry and celebrates with Craig and JP Despite having broken his sword, Kelsey is also congratulated by Mark, saying that at least the sword does not have Jerry. Everyone decides to eat the cake as a celebration, only to find that Jerry is eating it all. The Elders kneel on the ground and shout "JERRY!", Ending the episode.
- Kelsey's Dad reappears and his design is different than it looked in the picture in "You're It".
- The Elders probably knew each other with Jerry, as he stated that he bought them movie tickets.