To maximize longevity, you might think it’s best to play it safe and stay cozy. But some scientists believe we should do the opposite, as exposure to extreme temperatures can trigger our bodies’ own defenses against the killer diseases of old age. Chris heads for the freezing Arctic with his brothers Liam and Luke to take on the ultimate cold therapy.

Chris has always worked to keep his body healthy; now it’s time to start looking after his brain. Neurologist Dr. Sharon Sha challenges him to go off-grid into the wilderness without a GPS or map. Teaming up with his buddy, First Nations artist Otis Hope Carey, Chris will need to tune into nature to navigate through Otis’ remote ancestral homeland. The hike stirs up Chris’s most precious memories.

The results of the TB test are in... but just as important is the fact that numerous calves are scheduled to be born in the next couple of weeks. The first few happen very quickly in the dead of night before Jeremy's woken up, but soon he and Kaleb are dealing with some very challenging situations. Jeremy also meets local farmers to discuss a farmers' co-operative to supply the restaurant - much-needed by some who are really struggling - because the clock is counting down to Decision Day, when the Council will hold a public meeting to decide the fate of Jeremy's restaurant.
After weeks of waiting, the day of judgement for Clarkson's restaurant is at last here. He and Charlie set off to put their case to the powers that be. Is it a Yes? Or is it a No?

Everyone's still reeling from the council's decision and its implications: the money Jeremy's spent on cows for the restaurant, the locals who won't find work there now and the farmers' co-operative that's now defunct. Charlie sets out to find a legal team to help Jeremy appeal the decision, as Jeremy and Kaleb get to work on tagging the new calves and attempting to navigate a government helpline where you're supposed to register them.
There are other useful distractions from the council in the shape of Diddly Squat's Hedge Laying Competition and a mouse that brings the whole farm to a standstill. The legal team that Charlie has assembled pay a visit. They outline their strategy for the appeal, but also the costs that come with it.

Spring has sprung at Diddly Squat Farm, and that heralds the release of cows and chickens from their winter captivity. Jeremy's restaurant plans are in tatters, but that's not the end of his dealings with the council, who are also sending letters raising issues about what's being sold in the shop itself. From here on in, Jeremy decides that he and all around him must operate in a world of loop-holes and just-within-the-law cunning wheezes. Pepper the prized heifer still isn't pregnant and her last chance saloon arrives in the shape of a bull called Break Heart Maestro.
A chat with Alan the builder provides a Eureka Moment: the restaurant idea is not dead after all! There's much excitement as building work begins and Jeremy meets a chef called Pip. There's less excitement when he has to take his first steer to the abattoir.

The images of brothers Tamerlan and Dzhokhar Tsarnaev are released to the public setting off a violent chain of events. Meanwhile, clues from their past tell a complicated story - how was the radicalization of the ethnically Chechen brothers and the existence of potential collaborators. The post-9/11 biases played a role in the investigation.