A gripping alliance between two powerful families is set to unravel in the upcoming drama When the Phone Rings. MBC’s When the Phone Rings promises to deliver a tense romantic thriller about a couple in a politically arranged marriage. Three years into their union, their carefully constructed show-window marriage is upended by a threatening phone call, setting the stage for a dramatic unraveling. In this highly anticipated series, Yoo Yeon Seok and Chae Soo Bin star as Baek Sa Eon and Hong Hee Joo, a picture-perfect couple whose relationship, despite their outward appearances, is purely transa…