'KateModern' is offering the show's 1.5m viewers the opportunity to watch the episode being filmed as a piece of live street theatre.
The plot will see one of the show's characters, a PR, attempting to organise a stunt with Cadbury Creme Egg in Leicester Square which goes horribly wrong.
The footage will be aired on 'KateModern' on February 8 and 9.
The show, which was commissioned by Bebo in April 2007 and first shown in July, received more than 35m views in its first season.
The interactive show also allows fans to talk to the characters, cast and producers, solve plot puzzles and suggest future ideas for the show.
Pete Gibbons, 'KateModern' series producer, said: "We are very excited to be working with Cadbury and one of their most popular products.
"'KateModern' has become a very successful show on Bebo, and Cadbury will be the first of many major consumer brands that we will be working with this year."
Jodie Bates, brand manager for Cadbury Creme Egg, added: "Teaming up with Bebo's 'KateModern' has presented an exceptional platform through which to launch phase two of Cadbury Creme Egg's fully interactive 'Here today, goo tomorrow' campaign."