Mr. Rockstar meets Ms. Badgirl is imagining story of a fangirl. João Micael Villanueva Constancia is the famous rockstar in the Philippines. The 5th member of ROCKSTARS. One of the most handsome in the world of showbiz and music. One day, he met a bad girl slash his fangirl. Which is Ma. Yassi Kristine DeLuna Montefalco. The bully and the famous girl at their school. What do you think are the consequences they will face after they meet?