Like the previous JumpStart products, the gametakes place in a school setting, but begins after school hours when a giant anthropomorphicfrog named C.J. enters the classroom and frees a firefly named Edison. C.J. and Edison form a double act of sorts with C.J. being an ardent, self-styled "adventurer" while Edison is the more pragmatic straight man, who frequently makes sardonic comments in response to C.J.'s grandiosity. The duo have appeared in many other JumpStart products, such as JumpStart Advanced 2nd Grade, but their looks and personalities have both undergone enormous changes throughout the years. Edison in the US version has an Irish accent, whereas Newton in the UK version does not.