The last thing my father said was, "Don't come to San Antonio."​

But I knew my purpose in the new world was meant to be greater—and so did several of my friends. So, together, we set our sights on journeying to San Antonio with one mission in mind: to deliver the one person who is immune to the Harbor Strain into the hands of scientists who might be able to synthesize a cure.

​There's no guarantee we'll make it to San Antonio. There's also no guarantee that a cure will be made. But above all, one thing is for certain:

We have to try.