Cardiff threw away a three-goal lead in spectacular fashion as Plymouth fought back for a draw at Home Park, thanks largely to two Cardiff own-goals.
Michael Chopra's two goals for Cardiff were not enough
Steve Thompson volleyed Cardiff into an early lead from Michael Chopra's cross.
When Chopra struck twice, stealing into the box then converting a cross, the Bluebirds seemed to be home and dry.
But Cardiff defender Kevin McNaughton sliced into his own net, Barry Hayles bundled home from close range, before Daren Purse headed a second own-goal.
Plymouth manager Ian Holloway:
"I was tempted to make the change at half-time. Once Lilian Nalis and Akos Buzsaky came on they changed it for us, they both played their parts.
"We had a bit of luck with the first goal to get us back into it.
"But then the momentum was with us and these lads don't know how to give up. I am very proud of them."
Cardiff manager Dave Jones:
"Even at 3-2 I thought we would be all right, but we have got a young side, a young defence.
"They learned from Saturday's defeat at Preston and I thought that showed here the way we played for the first 75 minutes because we pulverised Plymouth.
"Now they must learn from this. They have not got experience but I have and that's what I must pass on to them."
Plymouth: McCormick, Barness (Buzsaky 56), Doumbe, Aljofree, Hodges, Norris, Wotton (Nalis 56), Summerfield, Capaldi, Ebanks-Blake (Chadwick 84), Hayles.
Subs Not Used: Seip, Reid.
Goals: McNaughton 69 og, Hayles 74, Purse 88 og.
Cardiff: Alexander, Gilbert, Purse, Johnson, McNaughton, Parry (Flood 81), McPhail, Scimeca, Ledley, Chopra, Thompson (Campbell 80).
Subs Not Used: Glombard, Kamara, Blake.
Booked: McNaughton, Ledley, Chopra, Gilbert, Johnson.
Goals: Thompson 8, Chopra 29, 49.
Ref: S Tanner (Somerset).