Malcolm's new bull is unwilling to perform, much to the annoyance of Marjorie and Douglas, the co-owners. Meanwhile in London, Kenny looks up some old contacts and goes for a drink with Robbie. Despite his best intentions Robbie doesn't take too kindly to being given advice by Kenny and becomes aggressive. Feeling he's been chasing a lost cause Kenny returns to Ronansay by himself. So he is as surprised as Abby when Robbie turns up unannounced.

Carolyn's post-natal depression worsens and Mary doesn't know what to do. She needs to keep a full-time eye on Carolyn and, as a result, Abby's time at the school increases. She finds herself enjoying the challenge - unlike Alfie who can't believe he's being taught by his mother!

Now that Mary has reclaimed the cottage, Kenny is living back at Abby's guest house and Gordon is at Marjorie's. Since the birth of Isla, Alistair feels completely impotent in the face of so much new responsibility. Alistair decides it's best for him to leave the island and does so in secret, leaving a note for Big Jerry on the door of the boathouse.

Things aren't going too well at the Campbell farm. Colin's simple manner unnerves Ida. He compliments her excessively in an effort to be polite but Ida feels threatened and demands from Malcolm that Colin leave. But Malcolm realises that Colin means no harm and lets him stay. Ida is furious.

Abby is furious with Kenny for bringing Robbie to the island. Alfie and Charley are full of curiosity but have mixed reactions to meeting their father. He tries to make an effort with them but too much time has elapsed and they remain unimpressed. Alfie really isn't convinced but Charley decides her dad is worth a second chance.

Robbie decides that the trip was a waste of time but Kenny, in league with Gordon, scuppers his plans to leave. Once faced with the prospect of having to deal with each other face to face Abby and Robbie start to talk to one another.

The bull's continuing lack of performance as prime breeding stock, causes Malcolm to call an expert in. But with the persuasion of Marjorie and Douglas, he finally gives in. The barn is set, the bull installed - now all they need is the music. Kenny and Heather duly oblige. And while the anxious trio wait outside, Kenny and Heather weave a little amorous magic of their own inside the barn. As the bull finally succeeds in delivering the goods, Heather and Kenny finally consummate their friendship. Marjorie also takes note of a few tips from the seduction catalogue, much to Gordon's delight. It seems that a sensual atmosphere doesn't only work for bulls….

Malcolm decides to take the bull to a local fare, and much to his and everyone's surprise, the bull wins a prize. Ida too is finally able to come to terms with Colin when, at the fare, he is maliciously teased by some youths. She comes to his aid, mending the relationship between them.

It's Mary's birthday and the islanders celebrate it by having a beach party. Robbie plans to leave Ronansay. It's not really of his choosing but he thinks he's wasting his time with the kids and Abby. But to his surprise, Abby's response is dismissive - why does he want to leave? So with a new purpose, Robbie faces his challenge. Kenny takes charge of the 'how to talk to your kids' lessons and Robbie's unexpected success results in his making some real progress with Alfie.

Carolyn, feeling depressed and isolated, misreads Dr Talbot's professional concern and kisses him - leaving him speechless. Big Jerry goes to see Carolyn and realises that she needs Alistair. He goes to find him - Big Jerry offers to take his place on the boat, and Alistair, after a few home truths given to him by Big Jerry, decides to return Ronansay.

A stranger turns up at the school asking questions. Having lied on an Education Authority register Douglas fears he's been found out. Gordon persuades Abby to conspire with him into being economical with the truth, but it proves fruitless - the stranger returns, and this time it's with the police. He represents Ida's ex-husband who wants custody of Peter. Malcolm along with the Islanders band together to protect them but Ida and Peter have no choice - a distraught Malcolm is forced to accept that they have to secretly leave the Island if they are not to be deported.