Phineas T. Barnum and friends finance the first flight to the moon but find the task a little above them. They attempt to blast their rocket into orbit from a massive gun barrel built into the side of a Welsh mountain, but money troubles, spies and saboteurs ensure that the plan is doomed before it starts...

Shoot to Kill is a four-hour drama documentary reconstruction of the events that led to the 1984–86 Stalker Inquiry into the shooting of six terrorist suspects in Northern Ireland in 1982 by a specialist unit of the Royal Ulster Constabulary (RUC), allegedly without warning (the so-called shoot-to-kill policy); the organised fabrication of false accounts of the events; and the difficulties created for the inquiry team in their investigation.

Stevie, fresh from prison in Scotland, finds a job on a London construction site. The working conditions are poor and most of the men are working under aliases, due to immigration status and to not conflict with their "signing on" for unemployment benefits. Some coworkers help Stevie secure housing, squatting in a council estate. Then Stevie meets Susan, from Ireland, who's struggling to be a professional singer.

Catherine goes to a local park to meet up with a school friend. The friend is not there, and Catherine spends the morning looking for her, with the help of the elderly park-keeper to whose stories she listens all the while. Several years later, Catherine is found hanging from a window in her home.

Grisly strangulations in London alert Nayland Smith of Scotland Yard to the possibility that fiendish Fu Manchu may not after all be dead, even though Smith witnessed his execution. A killer spray made from Tibetan berries seems to be involved and clues keep leading back to the Thames.

Michael Flaherty (Craig Wasson), an American Vietnam veteran of Irish descent, returns to Belfast to join the cause of his grandfather, Seamus (Sterling Hayden). Soon he finds that he is not as welcomed in his home country as he imagined he would be. Even worse, he's the target of an IRA assassination plot designed to make the British forces look bad in order to elicit financial support from wealthy Americans.

A young man, convinced of his paternity, aims to emulate his notorious father by committing daring crimes. However, his childhood friend is equally determined to track him down and save him from his rogue ways.