Set after the postwar collapse of an interstellar empire, a young orphan girl embarks on a quest for violent retribution. Six years old when her mother was killed, Buttercup endured an unforgiving adolescence on the streets of her home city. She's scraped by ever since, always searching for the man responsible, knowing one day she'll find him.

Long ago in the kingdom of Talahan, Queen Isabel, descendent of the great fae queen Azura, gave birth to two girls, Her second children, Atheena and Alexandria. The kingdom was in celebration for two months, until baby Atheena was abducted by a hooded figure. Now, Atheena knows herself as Ryia, the most skilled assassin in the assassin underworld. Then, Ryia is hired to protect princess Alexandria, a rebellious princess and her twin who only wants to explore and be free of the castle. But what happens when Ryia finds out about her past, and the people she thought she trusted were the people she should be most afraid of? And will Alexandria ever except her parents decision of putting her in an arranged marriage, or will she slowly fall in love with someone else? Will Alexandria ever be able to control her shadow powers that were passed down by her father? And will Ryia be able to save her sister from an evil assassin who is trying to kill her? Read to find out.