Meet Carly Yinsen, the untold daughter of the man who helped Tony Stark, Ho Yinsen. Nobody knows, even Tony, that Ho has a daughter and is extremely a genius. But being a genius isn't always an advantage. Because of this, Loki is back to have a revenge and he is going to use this girl to help them beat the Avengers. Carly can make a replica of Tony's suits, Cap's shield, and even make her own Hulk. Which side will Carly help? Does she has any superpowers like the other Avengers has? Will Carly and Tony get along knowing that both of them feel like they're the best and don't want anyone above them?