Gary and Debs are going on a creative writing weekend which means Tony and Dorothy are left to their own devices.
Tony has crippling tooth-ache and resorts to pulling out the tooth with the tried and tested door knob and string method.
After Dorothy returns from work with some painkillers for Tony, they sucumb to lust and end up in bed together. However, Gary gets home early and discovers them in bed.
Gary then faces a moral dilemma of whether to ditch them both or forgive and forget.