Fate/Zero
Episode 6
S1 E6:
A car screams down the moonlit streets of Fuyuki City, with a very happy-go-lucky Irisviel behind the wheel and a slightly unnerved Saber sitting next to her. The evening takes a bad turn when a mysterious shadow darts in front of them. The person claims to be Saber's loyal retainer, yet Saber has no memory of them...