Timelord Kadray uses his scepter to revert the Sagar Tree into an acorn. With this he plans to reactivate the dreaded Fountain of Fire.

The Trobbits sail to Red Crown Reef to supply the Merminites with Sagar fruits and nuts. But Captain Typhod the Phantom Sailor attacks, captures the Merminites and all the fruit.

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Blackstar's lover Katana uses a Fusion drive time ship capable of multi universe travel to journey to Sagar and return him home. But the Overmind captures her and forces her to help him acquire the Starsword.

The Overlord orders Crios the Ice-King to secure Leelana's key to springtime, so the harsh Sagar winter will last forever.

Blackstar and his allies are swept away during a terrible rainstorm and end up in the undersea kingdom of Aquaria located in the Magnetic Sea. There they face Neptul, one of the Overlord's minions and his captives, the Flame People.

Blackstar (1981) Blackstar & Klone return to the Sagar Tree after fighting the Overlord, but walk into a trap at a duplicate tree inhabited by evil versions of the Trobbits.

The mystic balance of the Starsword is upset during a battle with the Vampiremen. Now Blackstar must find the Air Whales of Anchar to repair the Starsword with their vocal chords. If Blackstar & Mara don't get there in time, the Starwsword will explode and take much of the world with it. But Blackstar is captured by the Sky-pirate Nehilis.

The Overlord casts a spell that drains all of Sagar's magic forces towards him, then turns the energy into a giant demon named Brilerand. But when Brilerand turns against his creator, Blackstar and the Overlord find themselves forced to work together if they want to defeat it.

After rescuing Princess Talena from an assault by the monstrous Thorg, Blackstar offers to escort her to her kingdom in the West. However, neither Balkar nor Mara have ever heard of Talena or her kingdom.

The rebel leaders are trying to convince Dahl of Gandar to join their cause when the city is attacked by Marakand, the city of Zombies. Soon Princess Luwena, Mara and Poulo are under the spell of Shaldemar the Zombie master.