Merle and Daryl Dixon always believed that they are the only Dixon siblings around because they never knew that they would have to face walkers along their own group of people. Merle has expected that something hasn't been the same in awhile at all but yet he has to send Daryl out on a supply mission and Daryl is against the idea once again. Months later the group has to move positions because of walkers attempting to invade the area and they ended up stumbling upon a girl who seems to be very much hurt in the forest. The groups leader Shane tries to convince them to leave the girl behind as they continue to head to a new location even though Rick is not so happy by the idea and he ends up picking up the girl into his arms. Eventually Maggie their newest doctor and survivor decides to take the girl out of Rick's arms. The girl does wake up a bit to see the two Dixon brothers staring at their leader and she smirks softly. When Maggie and Shane ask what her name is, that is when she answers Callie Dixon making the brothers freeze in their place. They get angry at her because they think it is not real and Callie gets mean like a wolf towards both of them. She is the real lost sister of them both.