CLICK is a computer mouse who can enter and exit the world behind the monitor as he pleases. KAT is a mangy hacker stuck inside the virtual world and always ready to try and foil CLICK’S plans, though he never manages to get the best of the mouse. Together with POINTER and the VIRUSES, the other set characters of the series, they tell stories using action, gestures, expressions and highly effective music and sound effects, but no dialogue.