Julia, a resident of the high-society apartment building at 721 Park Avenue, meets a successful businessman named Max in a café and has a magical night with him. Then, she finds out she's pregnant. She tries to tell Max but he doesn't believe her. Soon after, the threats begin….

A high-class apartment on Park Avenue looking over Manhattan. A lone working class girl amongst the high and mighty socialites, Carrie is working as a house-sitter, and she’s worried. She’s worried about her unstable employment and her senile mother. And about the neighbor, Trent! Every single one of the girls who visit her playboy neighbor, Trent Tanford, mistake Carrie’s place for his and disturb her sleep nightly. No matter how handsome he is or how much money he has, today is the day she’s going to confront him! What will happen when Carrie pays a visit on the boy next door?

Tessa is a secretary working for Sebastian, a prince who lives in a luxurious Park Avenue apartment in Manhattan. She realizes she’s in love with him, but they are from different social classes so she must forget about her impossible infatuation! Determined to do so, she hands in her resignation, but the prince says he wants her to do one last job for him before she leaves—travel with him to his home country, Caspia, and set up a meeting there. Tessa is interested in seeing the beautiful coastal country of Caspia, so she agrees to go as long as it’s her last job. But she never thought it would start such a commotion…!

Amanda, an event planner in Manhattan, currently has two debts and men! Because of her former boyfriend, she’s now deep in debt. If she doesn’t work hard enough, she may be kicked out of her super high-end apartment on Park Avenue. Alex, a handsome, competent lawyer Amanda got to know recently has asked her out many times. Her heart flutters before this handsome playboy type, but she can’t afford to go out with him, literally, and she doesn’t want to get hurt again…

Jacinda’s dearest sister, who lived in Manhattan, died mysteriously, and Jacinda won’t believe it was suicide. So she infiltrates the high-end apartment building where her sister used to live to try to uncover the truth. She’s hired as a housekeeper by billionaire Gage, who was her sister’s secret boyfriend. She’s broadsided by his overwhelming attractiveness, but the thought of becoming the lover of a man who might have killed her sister never enters her mind…