First Responder Calley is the first episode of Season 5.
Calley begins to feel that she has no purpose on the Chug Patrol team- however, she seems to have found the perfect job.
One hot day, Calley begins to feel that she has no purpose on the Chug Patrol team. She worries about herself so much that she nearly crashes into Emery, and accidentally leaves Harrison stranded on the line for hours.
Jackman, thinking of how an event like the latter could be prevented, holds a contest between Asher and Calley on who could be Chug Patrol's "first responder". After many struggles and doubts, Calley gets the job.