The competition is open to anyone participating in the Festival, attending performances and shows, or visiting the Fringe City in the next few weeks.
Julian Caddy, Managing Director of Brighton Fringe, said::
"Brighton Fringe is all about the freedom of creative expression and that includes all manner of performance and media, so a Twitter ultra-short story competition is a brilliant addition to it.
"We are really grateful to the Co-operative phone and broadband for their support in putting this competition together. I'll definitely enter it."
The challenge for entrants is to write a story in less than 140 characters. Participants are free to choose the style and the genre (horror, drama, love…) as long as their story deals with the idea of 'discovery'.
Once participants have their story, they just need to tweet their text including the mention @phonecoop and using the hashtag #BFstory.
Craig Lumsden, Marketing Manager at The Co-operative phone and broadband, explains:
"We want to support people and organisations that are making a difference and contributing towards a better world, and Brighton Fringe is doing just that. Society needs the arts and theatre, literature, music are for everyone to enjoy.
New devices and social media offer loads of new creative opportunities and we want people to make the most them. Everyone with an idea should have a go."
The prize for this competition is a year's free contract with The Co-operative Mobile.
Stories can be tweeted throughout the festival, from now until 2nd June. The winner will be chosen amongst the best entries and announced on Wednesday 5th June.