The group at the Guthry Estate entered into the treasure room to find a Warforged with a mossy beard and small (and large) mushroom people guarding the plants and animals found there - including a large dragon like skull
They convinced the Warforged, named Spore-44, that Archibald was dead and he was no longer needed to guard the treasure room.
Meanwhile, the other group found Spike the Triton in the Rainbow River, a dirty canal with a oily sheen
Spike agreed to retrieve Sir William's armor if Sir William agreed to fight for him in the future. The deal was struck.
Arriving at the Upper Crest of Trine, Spike was worried because it was in these waters the Petera dwelled
Sure enough, as Spike dived to find the armor, the Petera showed up
Sir William dove in to protect Spike and managed to divert the Petera so it instead smashed into the glass wall of the Guthry treasure room
As the treasure room flooded from the cracked wall, Sir William and Spike were pulled into the room
The group escaped with a one of the exotic plants but when they reached the gardens outside they were found out and made an escape over the wall using the vines growing on the interior
Spore-44 chased them as they got away on the gondola but could only watch as they rowed away
Meanwhile Wisp stayed behind in the flooded treasure room with Spike, who was staring fearfully at the skull
Spike explained it was the skull of a child of the species of Petera, and if Petera were to see it, it would become most enraged
At that time, Jasmine showed up, shrunk the skull, and stole away with it
The group all came back together, got their clothes dried off at a Tailor, and made their way to the ball on the fanciest gondola they could find.