This is not the first part of the series by Christelle Dabos so if you are looking to understand the concept of the story at first glance then it is not possible. Several things have happened in the past that a new beginner will not be able to understand. It is better to give a quick glance at the previous parts which are also in the voice of Emma Fenney.
This has become a thing of the past now because they know the truth and neglecting each other is not an option for them once again. However this time there is another issue i.e they cannot show their love as they have to keep it a secret. If the people around them come to know about their love then the entire plan on which they are working will perish within seconds. A power is disturbing the balance of their world and the people are trying to save their lives from this disturbance.
In order to stop this destruction from happening, firstly they have to understand the motive of the force behind everything. For more fun, on the weekend A Winter’s Promise and The Missing of Clairdelune are among the most recommended books. These books become philosophical at some stages so the kids might be needing the help of the adults to understand the concept.