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Booby-Traps, and How to Survive Them is the one hundred and third episode of Ninjago: Masters of Spinjitzu, and the fifth episode of season eleven.
Gayle Gossip reports the arrival of the Ninja at the pyramid in the Desert of Doom, where they attempt to convince Clutch Powers to join them in entering it. The grizzled professor initially refuses, but after receiving a call from Cecil Putnam of the Explorers Club threatening to cancel his membership, Clutch reluctantly agrees. The seven enter the pyramid, and are able to evade several traps thanks to Clutch's experience, which he has recorded in his book Booby-Traps, and How to Survive Them. Eventually, the group reaches a tomb sealed by a puzzle lock, which Nya and Jay begin solving.
Zane, translating an inscription that warns of an evil imprisoned within the tomb, recalls his previousvisions and tries to warn Jay. His warning comes too late, and the Serpentine witch Aspheera emerges, and announces her intent to find the "treacherous deceiver" responsible for her captivity. The Ninja unleash their elemental powers against her but find them ineffective, and after discovering Kai's fire power she decides to claim it for herself. When the other Ninja try to stop her using Spinjitzu, she uses her own Spinjitzu against them and finishes draining Kai's power.
Using her power, Aspheera chains the Ninja to a wall before setting out in pursuit of Clutch, who fled the chamber under the pretense of finding help. She then orders him to take her to Ninjago City, but he refuses and attempts to ward her off with a supposed protective amulet. Aspheera responds by causing the pyramid to erupt lava, and an explosion sends Clutch flying away atop a rock. A massive Fire Fang then emerges from the pyramid, with Aspheera mounting her throne atop its head before ordering it to head for Ninjago City.
Putnam's comments about Clutch "not having explored anything in over ten years!" is a nod to The Adventures of Clutch Powers, which was released in 2010; the statement was not technically true, as only nine years had passed between the film's release and the television premiere of this episode.
Clutch's deceased fellow explorer, Hageman, is named for the Hageman Brothers, who created the Ninjago series. His demise is presumably a nod to the Hageman Brothers' departure from the series, which they left prior to season eleven.