Over the remainder of the year, The Undertaker entered a brief feud with John Cena (defeating him at Vengeance) and was booked to have two WWE Championship opportunities. The first, on the September 4 "SmackDown!", against Kurt Angle, ended in a no contest, due to interference from Brock Lesnar. The second, at No Mercy, was a Biker Chain match between The Undertaker and Lesnar, which Lesnar won with the help of Vince McMahon. This match resulted in a feud with McMahon, culminating at Survivor Series where The Undertaker lost a Buried Alive match against McMahon when Kane interfered. The Undertaker disappeared for some time following the match, with Kane claiming that he was "dead and buried forever".