A breakthrough is reached by Dr. Cannerts as he works on finding a cure. Meanwhile, Katie and Jake learn the truth about patient zero; Jana and Suzy plan an escape via the tunnels; and a dangerous plot to secure a possible antidote goes off course.

When Teresa goes into labor, Jana, Suzy and Sam band together to turn Bitscan into a makeshift delivery room. Meanwhile, after spending some time with Dr. Lommers, Lex grows concerned after noticing a sudden shift in her behavior. Elsewhere, Leo continues to unravel the conspiracy behind the virus outbreak, while Jake stumbles upon some damning information about who may be involved. Finally, fed up with his lies, Katie confronts Dr. Cannerts.