Go Ijun, a Cat Shifter, has a fierce, one-sided crush on his senior, Kwon Nara. His peaceful campus life, spent happily admiring his senior from afar, is thrown into utter confusion when Nara suddenly starts acting strangely close and familiar. Ijun's heart flutters whenever they are together. Their bond quickly intensifies, and just as he leans in for a first kiss with his senior... instead of a sleek Chinchilla, a massive Guinea Pig suddenly appears?! "What is this rat?! Where did my senior go!" "I-Ijun, calm down. I'll explain everything." "I hate lying rats!" Can Ijun (the Cat Shifter) and Jihun (the Guinea Pig Shifter) truly overcome their deep-seated species differences and this huge, furry, first-love misunderstanding?