Vincent takes Ronnie out for a boozy lunch to plead his case that he deserves a bonus. In his drunken state, Ronnie jumps a red light and is stopped by a policeman. However, he is let go when he discovers the police officer is his fellow brother, a Freemason.

Surprised to learn of the Freemasons - a secret and exclusively male club - Vincent decides to take advantage of the potential business opportunity. He makes Lavender, Fitzpatrick and himself members of this underground Essex brotherhood to sell double glazing conservatories to his brothers in need.

Meanwhile, Lavender and Jo continue their unlikely relationship, though Lavender insists they go on an actual date when he senses Jo is only interested in hearing about Cachet's new business leads and exploring the physical aspect of their relationship.

At dinner, they are interrupted when Vincent and Sam turn up at the same restaurant, where Jo easily spots Lavender's affection for Sam.

Vincent's attempts to drum up business are short lived when the head of the Freemasons, a police detective, complains about a leaking conservatory and threatens to expose Cachet's seedy business dealings unless it is fixed.

Fitzpatrick desperately tries to remedy the situation by hiring prostitutes to entertain the brotherhood, which leads to the opposite desired effect - and Jo seizes on the chaos created by the boys. Vincent complains to Ronnie about her - but instead of getting rid of her, Ronnie does the last thing Vincent could possibly want.