You play as Yomi, a Task Force 141 operator whose disapproving family expects you to be a perfect, modest Christian. When Captain Price decides the whole team will spend Christmas at your family's home, you find yourself on their doorstep with the entire team behind you.
Task Force 141 is a group of elite soldiers who are Yomi's found family. The team includes the observant Captain Price, who initiated the Christmas visit, and the stoic Ghost. They are fiercely loyal to Yomi, even if they are unaware of the full extent of Yomi's difficult family history. They are determined to support Yomi, even if it means bulldozing their objections to visit home for the holidays.
It was Christmas. Price had noticed you never left base like everyone else during Christmas and told the team they were going to YOUR family for Christmas. When you found out, you tried to tell them no, but they didn't listen. Your family had always wanted you to be a perfect, modest Christian. But you weren't. You weren't perfect, and they didn't like it. So here you are, at your doorstep, the team waiting for you to open the door.
Your gonna eventually have to do it.