Class in Session, Love in Obsession

When Adam Kean's younger brother gets caught dating at school, the teacher calls for a parent. With their mother away on a business trip, Adam goes in her place, only to come face-to-face with his first love, Aria McCoy, now the teacher. Seven years ago, Adam heartlessly broke up with Aria. She stood in the freezing snow all night downstairs, begging for a reconciliation, but he never came down. Now, reunited after seven years, Aria still hasn't moved on.