The series, executive-produced by Oscar-winner Tom Hanks, tells the story of a Salt Lake City businessman, Bill Henrickson (Bill Paxton), who's also a polygamist juggling three wives: Barb (Jean Tripplehorn), Nicki (Chloe Sevigny) and Margene (Ginnifer Goodwin).
The women all live in separate houses adjacent to Bill's domicile — and deal with jealousy about each other and a slew of other issues.
And Bill has to keep his marriages a secret — since polygamy is banned in Utah.
According to an HBO press release, Bill and his wives have seven kids, and when "disturbing" news arrives about Bill's dad, he's forced to "reconnect" with his polygamist parents, who live in a fundamentalist compound in rural Utah.
"Big Love" generated reams of headlines when it was announced last January, not only because Hanks was attached to the project, but because of its controversial subject matter.
The series was co-created by Mark V. Olsen and Will Scheffer. The pilot was directed by Rodrigo Garcia ("Six Feet Under").
"Big Love" premieres Sunday, March 12 at 10 p.m. following the season premiere of "The Sopranos," which returns after a nearly two-year layoff.