Booster Gold and Blue Beetle are at the Justice League Embassy and decide to play a prank on the Martian Manhunter. Aware of his fondness for Chocos cookies, they decide to steal J’onn’s stash of snacks. Further, they buy up all of the Chocos in the city, leaving J’onn with absolutely no outlet to purchase more Chocos.
J’onn goes into the city in an effort to find more Chocos, but naturally cannot find any. Growing desperate, he flies into a rage, and his size begins to increase in proportion to his anger. Further, his mind devolves to a state of brute savagery, and he begins growling, “Kooo-kieees!” as he tears through the streets of New York.
Booster and Beetle realize that their seemingly harmless prank has grown far out of control and they try to calm the Manhunter down. This meets with little success, until they bait him to the warehouse where they have stockpiled all of their previously-purchased Chocos. His hunger abated, J’onn resumes a more normal form and sense of clarity.
Later, they bring him back to the embassy, where Max Lord and the others hold an intervention. Batman performs a test on J’onn’s DNA and determines that a chemical ingredient used in Chocos has caused a strong physical addiction in J’onn’s body chemistry. The Martian Manhunter uses his shape-shifting skills to physically exorcise the addiction from his body. This former aspect of himself acquires partial sentience and attacks other members of the League. The addiction draws upon the craving of each of their targets, and succeeds in revealing embarrassing facets of each victim (ie, Max Lord’s lustful desire for Wonder Woman, Ice’s craving for baby seals, etc). J’onn uses his Martian Vision to destroy the manifestation and everything returns to normal.