The breachmen are put to rest, jettisoned from a great height.
Boki doesn't believe that Wilford had the other breachmen killed.
The pipes start to flood second class and Javi and Ben realize a gill intake is jammed open causing too much water to be produced.
LJ and Osweiller use this opportunity to show how competent they are at Janitorial.
Boki is asked to fix the intake. He agrees and finds evidence that it was sabotage.
Icy Bob returns to Big Alice over the train cars with extreme frostbite injuries. Josie sees him and then experiments with the cold lock, discovering she doesn't freeze.
Roche has sent his daughter to stay uptrain. His wife, Anne, suggests that life was better under Wilford's Order. He disagrees.
LJ and Osweiller share their affection for each other and kiss.
Once the intake is fixed, Javi and Ben find that the god module that regulates hydrogen production has been damaged. They have to ask Wilford for a replacement and the condition is that Wilford bring it himself.
They try to keep Wilford's presence a secret but a tunnelman sees him and spreads the word.
When the new module is installed, the system overloads because of a hack Melanie had installed but Wilford didn't know about. They manually restart the train, with Wilford addressing the entire train.
The restart works and Layton sends up a flare that the train has been lost.
Layton is taken into custody on Big Alice. Zarah tells him not to give up hope.
Roche is also sent to Big Alice where Audrey escorts him to the Drs. Headwood who Drawer him with his family.
Wilford returns to Snowpiercer's engine and Ben gives him control of the train.