Cycle 1:
Oh look, how fluffy!: Hatches in Polaris; meets Reign and attempts to save an injured Lesser fawn.
Trouble Found: runs into Sebastian as he's burning plague-infected plants in Eridanus.
The Rat: meets Shengxiao in Orion and practices growing plants with his magic.
Quest: Gone Fishing II: pokes around at a glowing blue gem with Glory, Thothaga, and others. They decide to take the gem to Canis.
Fractured: befriends Caliante & co. but is diseased by Crack. Mongo, a friend of Caliante, offers to carry Scorch to Eridanus to be healed.

Cycle 2:
Quest: Bone Fishing: The Collector is freed from the blue gem. Giggle the hyena warns the group to be wary of him.
Save the children!: Scorch is brought to Eridanus and healed of the plague by Rift.

Cycle 30:
I wish we could go on a surface adventure: Scorch discovers the Mysterious Rift in Gemini and some minty, crystal-like plants.
Gardens in the Rain(forest): Scorch meets Sprig, realises plants might be dangerous, and decides he needs an anti-poison to invent agriculture.
I wish I had a jar of dirt: Scorch and Sprig visit the Collector, asking for an anti-poison and a bunch of dirt. (possibly to fill up the Hole in tunnel K?)