 Sigfried decides the time has come to hire a full-time assistant and he thinks he has the perfect candidate in Calum Buchanan. Tristan is now a full-time employee of the Ministry of Agriculture where he sets his sights on the attractive Deirdre McEwan. Mrs. Pumphrey needs uncle Herriot s help when Tricki Woo goes  flop bot , yet again. James is invited to join the local milk subcommittee, but is concerned as to whether he can afford it. Sigfried has difficulties with a colleague, Mottram, who is convinced that Sigfried is poaching his clients.