A Manchester-based entrepreneur thinks he has invented the cut-price alternative to a romantic weekend away - a rental kit that transforms an ordinary bed into a four-poster.The bottled water industry is worth millions and Guy Jeremiah from London wants to tempt the Dragons with his green alternative - a collapsible, reusable bottle. The multimillionaires are usually all for inventions that save money, but is this a step too far?Sam Petter brightens up the Den with her mission to get kids more active; and Lancaster duo Peter Harrison and Wesley Downham are hoping that their security company is a safe bet for the Dragons. Between them, they have plenty of experience in facing down tough characters, but will that help them hold their own with the Dragons?