


Without the lucky pants, the Delightful Reaper is defenseless and the Skeleton Samurai finishes it off, freeing the other kids inside it. Harold removes the lucky pants and takes them away. However, Harold arrives, demanding the return of his lucky pants. When the Delightful Reaper is distracted by Numbuh 1 and Grim, Mandy purposely fuses herself with the Delightful Reaper, giving her control of it and is about to destroy Number One and Grim. Mandy's robot begins to lose until Numbuh 1 and Grim show up and fight the Delightful Reaper, though they begin to lose as well because Harold's lucky pants are impervious to lasers, supernatural energy, and mustard. The giant M.A.N.D.R.O.B.O.T., piloted by Mandy, Numbuh 3, and Numbuh 4 comes into the battle. The Delightful Reaper continues assimilating children, after escaping, Numbuh 1 and Grim fuse together with the Bone of Barnacles to create a Giant Skeleton Samurai to battle the Delightful Reaper and Mandy. Numbuh 1 and Grim arrive at the moon base, where Grim finds out that Numbuh 1 isn't Billy, and Mandy imprisons them. When Numbuh 362 finds out the truth, Mandy has her quarantined as well. Soon Mandy becomes ruler of the K.N.D., renaming it the M.N.D. Only Numbuh 5 knows that she's an imposter, but since nobody else does, Mandy convinces everyone that Numbuh 5 is losing her mind. Sector V returns to the Moon Base, where they find Mandy disguised as Numbuh 1. The Delightful Reaper begins fusing kids into it, including Numbuh 2. Numbuh 1 realizes that he is talking about the Delightful Children from Down the Lane. Grim falls to the ground, saying that horrible children have fused with his scythe and that they're "evil and, strangely, delightful". Meanwhile, Grim comes to Billy's house, and mistakes Numbuh 1 for Billy. Sector V reluctantly takes Billy on the mission, where he mistakes the delightful machine for a bathroom, fusing him, the lucky pants, Grim's scythe and the Delightful Children into a being called the " Delightful Reaper". Meanwhile, the rest of Sector V are flying Billy to the Deep Sea Lab when they get an urgent message from Numbuh 362, informing them that the Delightful Children from Down the Lane are using a "delightfulization machine" to turn more children into their delightful slaves. Mandy captures Numbuh 1, and tortures him until Numbuh 1 tells Mandy everything about the K.N.D.

Mandy comes to Billy's house, and knows that Numbuh 1 is not Billy. When the KND arrive to fix the pants, they find they need 2x4 Technology, so Numbuh 1 dresses up as Billy to prevent Billy's dad from finding out about his pants, while the rest of Sector V take Billy to the K.N.D. He calls " Ed, Edd n Eddy's Pesky Problem Fixers", but Billy doesn't have any money, so Eddy tells him to call the Kids Next Door since "they're cheap." Billy accidentally gets Grim's scythe stuck in the pants, and he gets help fixing them before his dad gets home. When Harold leaves to buy underwear, Billy wears his dad's "lucky pants" despite being told not to. 6 References to other Cartoon Network shows.
