No Mercy was first held by the World Wrestling Federation (WWF, now WWE) as a United Kingdom-exclusive pay-per-view (PPV) in May 1999.

[7][8] On the September 28 edition of SmackDown!, Angle and Benoit defeated Rock and Triple H in a tag team match.

[9][unreliable source] On the October 2 edition of Raw is War, Benoit helped Angle in defeating Triple H to become the number one contender for the WWF title at No Mercy.

On the October 9 edition of Raw is War, the WWF Commissioner Mick Foley announced that Triple H would wrestle Benoit at No Mercy.

On the October 9 episode of Raw is War, Rikishi revealed that he had run down Austin with the car in the parking lot and he did it for The Rock because WWF always held back the Samoans.

[11][unreliable source] On the October 12 episode of SmackDown!, Commissioner Mick Foley announced that Austin and Rikishi would wrestle in a No Holds Barred match at No Mercy.

[7] The next night on Raw is War, Hardy Boyz defeated Edge and Christian in a Ladder match to retain the titles and the WWF Commissioner Mick Foley had stipulated before the match that it would be Edge and Christian's last title shot if they lost.

[13][unreliable source] On the October 9 episode of Raw is War, Edge and Christian interfered under the disguise of Los Conquistadores in Hardy Boyz' Tag Team Championship defense against Tazz and Raven but failed in preventing Hardy Boyz from winning the match.

[14][unreliable source] On the October 15 episode of Sunday Night Heat, Acolytes Protection Agency (Faarooq and Bradshaw) were playing cards with T & A (Test and Albert) in a backstage segment.

[15][unreliable source] On the October 19 episode of SmackDown!, Lita defended the WWF Women's Championship against Stratus.

This led to a six-person mixed tag team match pitting Lita and Acolytes against Stratus and T & A.

[14] On the September 25 episode of Raw is War, Chyna started celebrating her posing for Playboy magazine.

However, her celebration was cut short by Right to Censor (Stevie Richards, Val Venis, The Goodfather and Bull Buchanan), a faction that was against the nudity of female wrestlers of WWF.

[13] On the September 28 episode of SmackDown!, Chyna stripped to her bra and panties and defeated Richards in a singles match.

[9] On the October 9 episode of Raw is War, Chyna and her on-screen boyfriend, the WWF Intercontinental Champion Eddie Guerrero took on Richards and Venis in a tag team match.

[11] On the October 16 episode of Raw is War, the WWF Commissioner Mick Foley announced that Guerrero would defend the Intercontinental Championship against Mr. Ass at No Mercy.

[16][unreliable source] On the October 19 episode of SmackDown!, Guerrero finally broke away from Chyna by choking her with his crutch after Right to Censor attacked her.

[13] On the September 28 episode of SmackDown!, X-Pac attacked Jericho during his tag team match with Jerry Lawler against Tazz and Raven.

The first two teams were Lo Down (Chaz and D'Lo Brown) and Too Cool (Scotty 2 Hotty and Grand Master Sexay).

Dudley Boyz had won the match when Bubba Ray powerbombed Buchanan through a table but the referee was knocked out.

Eddie Guerrero interfered on behalf of Richards and Venis and nailed Chyna with a bouquet of roses, which had a lead pipe attached to them.

[4][5] In the sixth match, William Regal defended the WWF European Championship against Naked Mideon.

[4][5] In the main event, The Rock defended the WWF Championship against Kurt Angle in a No Disqualification match.

Triple H interfered in the match as he tossed Angle out of the ring, hit The Rock with a Pedigree and carried Stephanie to the backstage.

[19][unreliable source] On the October 26 episode of SmackDown!, Stone Cold Steve Austin was hit with a wrench as he headed to the ring to attack Rikishi after Rikishi's Handicap match with Too Cool (Scotty 2 Hotty and Grand Master Sexay).

[20][unreliable source] On the October 30 episode of Raw is War, Austin defeated Rikishi in a No Mercy rematch contested inside a steel cage.

[21][unreliable source] On the November 2 episode of SmackDown!, Rikishi cost The Rock a title shot for the WWF Championship against Kurt Angle.

[23][unreliable source][24][25] On the other hand, Austin took on Angle and Rikishi in a Handicap match on the November 6 episode of Raw is War.

[26][unreliable source] As a result, on the November 9 episode of SmackDown!, Mick Foley announced that Triple H would wrestle Austin at Survivor Series.

[24][25] The next night on Raw is War, The Hardy Boyz dressed as the Los Conquistadores defeated Edge in a handicap match after Christian was taken out backstage to regain the WWF Tag Team Championship.