Part of the article gives a brief look at what Seeker is about:
“In the pilot, this ancient boundary is breeched, and as a result it lets
in from the other side a territory called the Midlands, along with magic, good
and bad, which hasn’t existed for several generations in Heartland. Also through this breech comes a powerful and mysterious woman, Kahlan [Bridget Regan], who is in possession of magical powers. She finds Richard and, much to his dismay, tells him that he is not who he thinks he is. In fact, he is destined to grow up to become a hero called The Seeker, who rises in times of great strife and trouble.”

Not surprisingly, Richard finds Kahlan’s story difficult to believe, but as events in the pilot continue to unfold he has no choice but to take to heart what she has revealed to him. “Kahlan is being pursued by these minions of an evil tyrant known as Darken Rahl [Craig Parker], who rules the Midlands,” says Biller. “That’s when Richard begins to realize that what Kahlan has told him is true, and it’s also revealed that an old man, Zedd [Bruce Spence], who seems to be a sort of crazy old coot and has lived near Richard and his family for years is, in fact, a great wizard who rescued Richard as a child to avert a prophecy.

Click here to read the full interview