AG

For twenty years, Tony Stark kept one secret from the world—his little sister. Born months after Howard Stark’s death, Y/N grew up far from the spotlight, protected from the dangers that came with the Stark name. Only Tony knew she existed, and he intended to keep it that way. Then, after celebrating her twentieth birthday a little too enthusiastically, Y/N stumbled into Stark Tower at one o’clock in the morning wearing a little black dress, carrying her heels, and very, very drunk. JARVIS recognized her. The elevators let her in. The Avengers had no idea who she was. As Tony’s carefully guarded secret comes to light, Y/N unexpectedly finds herself gaining the family she never knew she was missing—and catching the attention of one blue-eyed super soldier who can’t stop thinking about the mysterious girl who accidentally turned Avengers Tower upside down in a single night.