This was supposed to be the real summary but I was charging my phone (which had the summary) somewhere else. Sooo, I wasn't supposed to tell you that the eldest had a power :P Stupid I am Stupid
Two sisters and a brother became orphans after Pitch killed their family. The eldest didn't trust the other family members. North thought that they owe it to them and adopted them. The eldest stays with North. The two younger siblings stayed with Bunnymund. But what does the eldest hold? And why did her old friend say that she was their 'secret weapon?'