The year is 2050 and the Star Runner is two years into its 90 year voyage; a voyage that will take them to the Silver Sun. Frozen in the hold is the precious cargo of 550 frozen New Settlers, waiting to colonise the new planet. After encountering a solar fog, the sensors on the Star Runner pick up a non human entity. Is it an alien? A major computer glitch threatens the entire mission.
Pancha develops a strange telepathic connection to the ships computer. Although unexplainable, it proves invaluable when she detects an imminent system failure and sounds the alarm. Via the holophone, Leonella learns a lesson in change from Earth. Tycho and Cinnamon want more responsibility.
After a computer crisis, the crew decide to reanimate one of the frozen New Settlers to check for damage. Cyriax ends the debate among the crew about which person will be chosen but Degenhardt has his own ideas on who that will be. Pancha's isolation fom the ship's computer system has unexpected consequences.
When reanimation takes place it is not Dr Flickadello as planned but someone completely unexpected. What has gone wrong? Cyriax questions Degenhardt to try and work out what happened. Pancha stays quiet about what she knows of Degenhardt's swapping of the pods. Leonella splices together the genes from lavender with a daffodil and creates a blue daffodil. But who wants a blue daffodil?
The crew are not happy with Zandie's presence but she is determined to stay on board. Not everyone is happy with this decision least of all Tane who sees Zandie's presence as a destabilising influence on the Star Runner. When the greenhouse plants dies, Tane is the first to accuse Zandie and demands that she be re-suspended.
When it is discovered that Degenhardt selected Zandie for reanimation, Degenhardt is ordered to face a disciplinary tribunal and must choose his punishment. Unimpressed that Degenhardt interfered with her life, Zandie tries to settle into her new life by moving into the girls dorm.
Having decided his punishment is to be frozen from the remainder of the 90 year voyage, Degenhardt prepares to meet his fate as a spectacular comet passes by and the Star Runner is thrown into disarray.
With the Star Runner on a collision course with an uncharted planet, it is Zandie who has the answer that saves the ship. The planet appears to be habitable and so the crew launch probes which are mysteriously lost. Annoyed that Cyriax appears to have not listened to the crews wishes, Zandie and Degenhardt decide to fight for what they believe in.
Tane manages to fly the Star Runner to safety using the gravity of the newly discovered planet Earth Two.Frictions arise when Mara is selected to talk to Earth in a worldcast interview. Tane and Leonella share their first kiss.
Tensions build as Tane and Leonella try to hide their relationship. Zandie, Degenhardt and Leonella lock themselves in the dorm, demanding to be allowed more of an equal say in how things are run on Star Runner. When Tane fails a flight test, Cyriax gives him an ultimatum; shape up or stand down.
A wormhole swallows the Star Runner leading to the break up of the mutiny. But the Star Runner is now lost in time and space.
Sheng manages to find a way to get the Star Runner back through the wormhole but it takes some skilled flying from Tane to actually do it. Zandie plays havoc with Tane's feelings for Leonella by suggesting she was Cyriax's spy. Tycho sees something out of the ship window. Have they brought something back from the wormhole?
The strange space creature that Tycho claims to have seen, fails to materialise but then Pancha and Sheng start to get odd sensor readouts from the outside sensor system. Did Tycho really see something? To allay the fears of the crew, Cyriax performs a spacewalk and finds that a loose solar panel was causing all of the problems. Once back on board, Cyriax notices something odd on his space suit and is bitten by an alien space slug!
Infected by an alien, Cyriax hides his illness as he slowly slips into madness. Tensions between Leonella and Zandie come to a head. Pushed to the brink, Leonella challenges Zandie to a martial arts joust.
With Cyriax's mania building, Zandie consoles her loneliness with a bottle of wine. On the cubeball court, Cyriax plays dirty with Tane but Degenhardt is unable to convince the cadet to report the injuries. Pancha, uncomfortable with her own body image after Sheng tries to ask her out, creates the "perfect girl" on the computer.
Cyriax and his irrationality sees the Star Runner heading back to the Wormhole! Meanwhile, Mara relents and accepts some illicit holophone credits from Zandie and Pancha introduces Sheng to her digital amalgamation.
The Commander's madness is a subject no one dares comment on even though his latest order has the Star Runner flying back towards the wormhole. Pancha and Sheng try to work out a way to combine their hectic schedules with time for love. Mara is stood down causing Lillian to confront Cyriax who collapses in a fit of alien convulsions.
Having collapsed, Cyriax's infection means that the ship will have to be completely disinfected. But will Tane and Degenhardt's egos lead to a double tragedy? Sheng and Pancha's relationship suffers when Pancha decides she can't mix work and romance.
The only way to save the deteriorating Cyriax is to send him back to Earth. But who will go with him? Volunteers are called for before Acting Commander Steve makes his decision; Tane and Mara. Leonella has other ideas though. If Tane is going, so is she!
As Degenhardt and Mara battle to solve a riddle that could mean Cyriax won't be sent back to Earth, Leonella campaigns to replace Mara on the voyage and Zandie is asked to help choose which of the settlers to reanimate to help crew the ship.
