Two sisters, a futuristic world, and a mystery that haunts them both. Celia and Kasey are sisters, Celia- a fun extrovert who mysteriously disappears one day, and Kasey- a more detached introvert who is obsessed with science and trying to find where her sister went. They both live in eco-city, a place floating above earth that is meant to be a sanctuary for people. Cee wakes up one day on the shores of an abandoned island with barely any memories and a little robot to keep her company until a mysterious boy shows up and tries to kill her, i.e. meet Hero. He also has no memories and blacks out when he tries to kill her. Kasey is trying to solve the mystery of what happened to her sister and where she went, all the while a mysterious boy named Actinium shows up and seems to be the missing piece to finding where her sister went. Throw in a whole lot of future tech, eco-planet stuff, and a big mystery with a little bit of romance and this is what you get. The overall story is interesting and the world setting is definitely unique. I found myself getting confused at some parts but in the end it made sense, sort of haha. Overall, a interesting read and great for anyone who is interested in a futuristic mystery.

*Thanks Netgalley and Text Publishing for sending me an arc in exchange for an honest review*