Tensions rise as representatives from across the galaxy gather to confront the threat of the Dark Matter Anomaly. Zora's new sentience raises difficult questions.

While Kirsten leaves the Traveling Symphony behind to track down the Prophet, the Conductor accepts an invitation for the rest of the grieving troupe that breaks her heart.

The Hicks recruit help for picking stones.

We rejoin our heroine for her latest adventure just as she awakes to find herself... in the body of a troll! Her mum is worried sick, and now has to deal with the strange creature that seems to have taken Hilda's place. Now, both of them are in a race to be reunited before Ahlberg and his safety patrol get the chance to use their new secret weapon to lay waste to the trolls, and Hilda along with them!

Emily's boss from Chicago digs deeper into Savoir's accounts, putting Sylvie on edge. Mindy's budding romance suffers a blow when her secret comes out.

Tyson and Shanika arrive home to find Jalingbirri dead and their home destroyed by the Vampire King; Tyson wants to run. but Shanika vows to go down in the tunnels to find out if her mother is alive and being kept as a bleeder.

On a journey to unravel her deepest trauma, Kirsten goes back to the apartment she once shared with Jeevan and Frank.

Carrie's friends rally to help her recover from hip surgery. Charlotte learns some surprising news about her daughter, and Che's words hit home for Miranda.

Jian opens a hard drive that chronicles Song Wonkyung's life and work on the station. Meanwhile, others uncover the remains of the experiment.

On New Year's Eve, Lisi works at a posh party hosted by Vanessa, the rich girl she holds responsible for her brother's tragic death a year earlier.