Fate/stay night was originally a game developed by TYPE-MOON, and is also the first creation which TYPE-MOON made after going into business (instead of being a group of Doujinshi people).

Seven Masters, Seven Servants. Only one can correspond to the Holy Grail

In the legend, the Holy Grail is an artifact that can make your wishes come true, in order to summon the Holy Grail, a ceremonial is required. The seven Masters chosen by the Holy Grail will be granted the seven Servants chosen by the Holy Grail: Saber, Lancer, Archer, Rider, Caster, Assassin, and Berserker. The Master must prove him/herself that he or she is the only one qualified to use the Holy Grail. In other words, he or she must defeat all the other Masters to prove him/herself.

Shiro Emiya lost his parents in a fire when he was young, and was adopted by a magician, even though he denied teaching Shiro magic, the un-talented Shiro still master a little. When the magician died, Shiro remained a worthless magician. Entangled with the "War of the Holy Grail" by accident, Shiro was granted the Servant "Saber" and was chosen to be one of the seven Masters.

Credits: kulthuzard

I have deleted my previous Fate/Stay Night review :P Well , those who had seen it ought to know why XD
Either way , Fate/Stay Night is generally ordinary in terms of storyline and action sequences standards but it have a set of interesting concepts and systems , along with a cast of likeable characters.

Overall ( Others ) :

Romance :
All right , the romance part of this Anime is fairly tragic in it's own way , though it's not particularly heart wrenching nor emotional. But I suppose it's somewhere there?

Action Sequences :
Their not exactly that action packed and their fairly boring to be honest , since the developers have over-used the situation of which the characters faced a near-death situation and survived all the time.