Natalie operates as a shadowy presence tasked with surveilling Nobita and his companions throughout their Cretaceous-period expedition. She maintains covert contact with Jill, a Time Patrol agent concealed within the guise of a white monkey, orchestrating meticulous oversight of the group’s movements. Initially, Natalie and Jill rigorously enforce historical accuracy, intervening to thwart Nobita’s attempts to divert the meteorite destined to trigger the Cretaceous-Paleogene extinction. Their stance evolves when Jill employs a check card to evaluate the strength of Nobita and Kyu’s partnership, prompting them to withdraw further interference. Natalie’s actions underscore the Time Patrol’s dual imperative to safeguard temporal continuity while navigating the human dimensions of Nobita’s desperate mission.