Super Mario RPG: Legend of the Axem Rangers

Red, the main character, comes home one day to find that his sister, Pink, is missing. Realizing that Pink is not the kind of person to leave without at least leaving a note, Red suspects the worst. Having no leads whatsoever, Red decides to pay a visit to a certain castle where a certain Koopa King lives; a Koopa King that everyone knows has a thing for kidnapping ladies in pink.