Thorongil (the clone) awoke on Argon's island with no memory of (or xp from) the Dustplane expedition. While he was there, Argon approached him on behalf of the dragons. At some point, they're going to be looking for a new guardian for the secret island where dragons go to lay their eggs. Sometimes giants raid this island to steal the eggs, and the dragons need allies to watch the place who aren't interested in stealing them (or the other treasures on the island). Thorongil struck Argon as someone with the right temperament for the job, and his ranger skills are a definite plus. Thorongil didn't make a commitment, but he accepted the Dragonstar, a magical gem-studded star that will observe his actions for the next few years.
Thorongil spent a week on Argon's island reattuning his items and soaking up cures from a local dragon priest. Tweet appeared at one point, even though the plant cloak hadn't reattuned; he registered as a "tweet bird" on locate plant/animal.
Argon teleported Thorongil to the Hollerith Temple, and from there Thor headed north into the forests near Lord Rogtubbins' keep. He ecnountered an ogre with six orcs and a dead hybsil; he knocked out the ogre in the surprise segment, and the orcs scattered. Then he buried the hybsil and took the ogre's stuff but left the ogre alive. He also encountered a wounded hawk at 1 hp, who he calmed, fed iron rations, and took on his journey.
After two days of walking, Thorongil met up with a 20th-level treant acquaintance called Sunlight. He'd originally gotten his plant cloak from Sunlight, but he was no longer comfortable with it (since it's connected to the meddling Plant Dude, presumably) and gave it back. (Tweet hasn't appeared since.) They talked for a while; Sunlight said that "treant magic is slow magic, but everyone's in a hurry these days" and that treants were declining but would be back someday. He also lamented the necessity of accepting help from "quick sources." Thorongil spent the night by Sunset and found himself imbued with 2 clws and a speak with animals.
Thorongil used a clw to heal the hawk and then started a conversation with it. The hawk said it had been shot by someone who's been going around shooting animals with barbed arrows out of spite. They set off to look for the miscreant, and while they didn't find their quarry, they did come across a barbed arrow, black with red fletching, bearing a red eye design on the arrowhead.
Thorongil headed off to try to track down his tribe, with the hawk still in tow. On his way, he encountered a druid arguing with half a dozen orcs. They were speaking Orcish, so Thor couldn't follow the conversation (apart from recognizing some of the more colorful bits of Ganeth's vocabulary), but the sense was clear: The druid was brandishing one of the miscrant's arrows at the orcs, and the orcs were not impressed. Combat ensued, and our hero stepped in; three orcs went down, three orcs ran away, the druid (a 1st-level called Sumac the Lesser) was knocked to 0 hp, and Thorongil used his last clw to bring Sumac positive again.
Sumac had been sent by his supervisor (Jute, with whom Thorongil and Silvana are familiar) to investigate the shootings; after having no luck with the elves, he decided to try asking the orcs. Thorongil thought he might have better luck with the local wood elves than Sumac did, so he started tracking them. He heard fake animal calls after a while (signals), and then he met Verdana, the local tribe's sentry. The introduction was not to the sentry's liking, since she'd heard the legend of Thorongil and knew he was with Rillifane, so she went to get one of the elders.
The tribe was in fact Thorongil's own, and Thorongil had been presumed dead when a knife keyed to his life-force had blackened (when the original Thor went to Dustplane). Eldvar, the tribe's leader, tested Thor's identity by having him talk to a pair of treants (young friends or offspring of Sunset's), figuring dops and most other kinds of imposters wouldn't know how to do that. The result led to much happiness, though it was a bit embarassing to have held a funeral and planted a tree for someone who'd ended up not being entirely dead. Eldvar decided the thing to do was to have an un-funeral, so that's what they did.
The tribe had come across a number of incidents like the ones Thorongil and Sumac had been investigating. Oddly, they never found dead animals, only wounded ones. It appeared that the shooter was passing through the area, shooting stuff on the way, and was probably long gone by this point. Sumac cast detect magic on the arrowhead and found traces of necromantic magic on it.
The tribe hadn't heard anything new about Teonor, Thor's rash younger brother, though he was presumably alive (his side of the knife hadn't tarnished).
Thorongil made the hawk into an animal friend, and after a relaxing vacation with the tribe, he headed back down to the Hollerith Temple. The priests analyzed the arrows more carefully and found charm and divination magics along with the necromantic trace. Player speculation is that the arrows might allow some kind of scrying through the animals' eyes; this would make killing them useless for the shooter, and the barbs would be needed to keep the arrowheads attached to the victims.
Ganeth eventually hooked up with Thorongil at the Hollerith Temple and brought him back to the party, but while the new Thorongil had been growing, the rest of the crew had been having a very interesting time...