Capable, experienced Alexa and smooth-talking newcomer Jason are competing for a senior position at a high-powered advertising firm when each of their significant others breaks up with them. Thinking she's confiding in a friend, Alexa sends a "broken heart" text to Jason by mistake. The two spark up a phone-only relationship, with neither daring to ask who the other really is, and grow ever closer as they support each other through work problems and heartache.