Great Job Mack!

Summary
After learning that Mack is the new head engineer, the captain compliments Mack (MatPat) on a good job. As narrated by Mark, Mack takes over the ship and through several glitches, the story gradually shifts from Mack pardoning the captain for their failures as a leader to him murdering the captain via firing squad. The captain then goes back in the wormhole and has to again choose whether to go left or right.