The TV ad, named "dodger's number 1", has been created by VCCP and kicks off on Saturday (28 April).
It will introduce the Choccie Dodger Monkey character, who joins Jammie and Toffee, who first appeared on screen for the brand in May 2011.
The ad will involve the characters competing in a music battle based on popular Saturday-night TV talent shows.
The TV campaign will be supported by significant online activity, including a series of short videos encouraging consumers to vote on the music battle on the Jammie Dodgers website and the YouTube channel.
Media buying was undertaken by Universal McCann.
Stuart Wilson, chief marketing officer at parent company Burton's Foods, said the campaign, "should really prove invaluable in maximising exposure of the Dodgers range across a range of variety of platforms".