B&B proprietors Alvin and Sunny invite their weekend 'Sexplorers' to join them in a voyage of auto-erotic discovery - although Alvin would prefer to be at the garden centre. But who is the mysterious femme fatale in the dwarf conifers and what is the secret of the fearsome Medusa?

When Vinnie goes AWOL, Reenie is forced to take on a new volunteer at the charity shop. But who is the mysterious Keith Drop and what is the dark secret behind his costume jewellery? Meanwhile, Dog Cinema impresario Kenny Harris is shocked at the return of his arch enemy, the felinophiliac Dougal Siepp.