Having survived a world-wide pandemic several years ago, Jennifer and Rick are thrilled to be expecting their first child.

But their excitement fades when fate makes a gruesome appearance.

When children born to pandemic survivors reach their fifth birthday, one of two things happens: they change or they die. No one understands why or what to do about it.

Rick and Jennifer have a decision to make and very little time to make it. What can they do? How will they protect their growing family?