Last time on Samurai Jack:
After being told everything in her life was a lie, Ashi saw the world for what it really was, Aku screwing with Jack on a near-global scale for the evilulz. Unfortunately for Jack, seeing innocent children die was one step too far, and a mysterious figure dragged him off to parts unknown.
Pity if he had stayed about ten seconds longer he would have seen the kids were alright.
Now Ashi, having gone from wanting Jack dead to seeing him as the only person to actually give her a straight answer, has gone looking for the samurai, unaware of what he has done.
Also Aku is all depressed and the Scotsman is a Force Ghost.
Enjoy!