"I have two Identities. This is normal." Set in a universe where every human has two identities, Sia lives a normal life with her family and shares a body and brain with her 'other' identity Sahara. Together, they can face a challenge and come out unharmed. One identities weakness will always be the other's strength. All this, however, is different for Mack. He has a secret he can never tell anyone for it could have unknown consequences for him. Pretending to be like everyone else, he faces a constant struggle of keeping this secret away from others. When he meets Sia, he finds himself trusting her more than anyone else before... As they grow closer, secrets are revealed - causing further revelations and consequences neither of them could have ever expected.