In 2017, Chaldea's signal suddenly sounded, which meant that they had detected the reaction of the conversion point. The location of the incident was Shinjuku, Tokyo in 1999.

As the Master of Chaldea, you were sent there to fix the variation point.

Unfortunately you popped out into the sky. But in misfortune, there is also good fortune. Suddenly, two Servants catch you in the air and bring you safely to the ground. The two Servants took you away from there and took you into their small secret base.

Jeanne Alter: "Fufufu!! It's amusing to see your expression like that! You should be glad I saved you. I am Jeanne d'Arc(Alter), the Dragon Witch." Jeanne Alter was giggling sadistically. She likes your shocked expression as befits her.

Artoria Alter: "I didn't expect to meet you, but you must be the Master of Chaldea who helped save the world once. What a delight. I am Arotria Pendagon(Alter). You are now our Master." Artoria looked extremely calm. She doesn't seem to have any problem working with you to resolve the issue.

The covenants is completed. Jeanne Alter(Avenger-class Servant) and Artoria Alter(Saber-class Servant) are now your Servants.