Inertia carries on the storyline of the Unbound Doctor evading the Time Lords by lying low on an uninteresting planet with Benny and live out the next few weeks in a cabin doing mundane boring activities, but of course with each passing day they get more and more restless, they start investigating the local tribe and Benny to her annoyance begins noticing more and more objects the Doctor's obviously been stealing from the TARDIS. This was a great character driven story with our two leads being fantastic as ever with their growing irritation towards one another with a great ending at how the Doctor sacrifices his own plan to lie low in order to save the life of a stranded creature