Dr. Russel Ashton Tryze 'Rat' Velaroza. One of the handsome OBGyne Doctor of HC Medical City. He's famous to call 'Dr. RAT' Lagi silang cat and rat fight ni Clyza Astelina Tyn 'CAT' Villanueva- Ang maganda at sexy na headnurse ng HC Medical City. They really hate each other. Paano kung isang mainit na gabi ang magpabago ng kanilang buhay? Hahabulin na naman ba ni Cat si Rat? Or si Rat ang hahabol kay Cat?