Since The Premiership began in 1992, no non-league side has beaten a top-flight club but from the start Dagenham set out to make history and they harried their illustrious opponents throughout the game and it was the Conference side that comprehensively outworked and outfought Charlton.
On the rare occasions that The Addicks could break their shackles and create something of note, the poor finishing of Kevin Lisbie stopped them capitalising on the chances.
In the second half, Dagenham enjoyed almost total control but could not convert this into a goal and the ninety minutes elapsed with a blank scoresheet.
However, in the 92nd minute a speculative cross from the left led to confusion in the Dagenham area, the ball went through a forest of legs before landing at Newton's feet and the winger prodded the ball home from three yards.
Towards the end of the game, the needle between the two sides exploded into a mass confrontation which contributed to the 11 bookings.
Wimbledon enjoyed most of the possession at Meadow Lane but again a poor standard of finishing stopped the higher division side from completing the job in normal time.
It looked bleak for The Dons as Chris Willmott was sent off for his second bookable offence in the first period of extra-time, however, Andersen's powerful header with just a minute to go shattered The Magpies and gave Wimbledon a late win.
Charlton will now go on to face Tottenham in the fourth round whilst Wimbledon travel to Middlesbrough.
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