Tim's ex Sarah calls him up and wants to get together, Tim is over the moon at the idea of them getting back together, though Mike and Daisy are less impressed and worried about him getting hurt again. Meanwhile, Mike is up for re-evaluation for the TA, and is delighted to be let back in. Tim meets up with Sarah and it turns out she really does want to try again with him, but at the last moment he sees sense and declines, not wanting to give up all his has with Daisy and his friends.