Several days pass since the previous mission, during which time Endeavour moves from Hive to Kylal to bring everyone else to wear the party now is. The previous party completes their quarantine and are released, while the 'Mint Cake' creature remains quarantined by the Botanists for further study. Tiny Ember joins the party.
Ninth Truth wants to seize the opportunity presented by this newfound 'gate' linking Kylal and Hive IV, and asks the party to head back through and perform further study of the flora and fauna there - this time in daylight. This will involve heading back across the Fifth Sea and into the forest, but Ninth Truth suggests that the party avoid going too deep into this dangerous area, and instead only go a short way and parallel the coast, looping around to come back out near their raft, in order to minimise the risk. If the party can determine a safe route, this will be invaluable information for future missions.
A second party is also preparing to head out: a mystic named Undying Dawn, from Endeavour, and their party of (questionably competent) guards. They intend to follow in the wake of the first party to get out of the pentagonal facility, then take a different route through the forest for their own purposes.
The party head through the gate, and discover that the Crypt Guardians are not hostile towards them, instead seeming somewhat confused. The doors out of the chamber have been sealed (perhaps to repel the previous Decay attack), but Delicate Harmony identifies a control panel which Tiny Ember is able to operate to open the doors out. The party pick their way through the facility and out onto the beach to find the raft they left there; Warded Path leaves a series of notes written on the facility walls to guide Undying Dawn's party past the traps and decay creatures.
After fending off the Skulkers long enough to get the raft back into the water, this second journey across the Fifth Sea is more eventful than the first one. The waters are choppier, and aquatic creatures accost the party; the first group are more docile, but the second are aggressive and attack the raft as a group.
The party reach the mainland and make their way through the forest. They encounter several groups of creatures. The first group is a mixture of quadrupedal, emaciated beings accompanied by more of the bipedal ape-like creatures from before, all working together on something, which attack the party as soon as they arrive. Once dealt with, the party move on, and soon come upon another group of the same creatures. However, this second group is very docile, and the party are able to spend some time amongst them, observing them, before moving on.
Tiny Ember tinkers with her communicator in an attempt to run some diagnostics on the buzzing static signal coming from the planet Hive, wondering if it might have had any malignant affect on the drop pod's earlier navigation. While the tinkering is by no means perfect, she is not able to discern anything notable about the static - it just seems like normal static.
From a high ridge looking down into a valley, the party observe what appears to be basic organised agriculture. Tall, spindly figures with many arms and scything claws work the ground, overseen by more of the large willowy creatures from before. An immense bulbous form sits in the centre of this arrangement, with smaller bulbous forms seemingly growing around the site. Tiny Ember attempts to get closer, but the creatures sense her at a distance and she is forced to retreat.
Moving onwards in the forest, the party come upon a glade containing ship wreckage and corpses. Much like the rest of the forest, Warded Path and Tiny Ember do not detect any decay here (so no risk of these corpses getting up). Amongst the wreckage is the party's drop pod from the first mission, as well as part of the remains of the Lesser Horizons settlement ship that first tried to land on Hive IV. Drag marks on the ground, coupled with the party's understanding of where their drop pod originally landed, indicate that none of this wreckage originally landed here, but rather was brought here from elsewhere.
The party call in their finding to the Endeavour, and conclude that they have now completed their mission objectives, suggesting to the Endeavour that they should prepare for an Intervention to pull them out. Before leaving, they salvage a variety of items from the site for further study. As Tiny Ember pulls the flight recorder out of the Lesser Horizons hull panel, the party becomes aware that the Hive IV creatures (or at least, the aggressive faction of them) have been alerted to the party's presence and are closing in.
Warded Path calls an Intervention from Endeavour (the ship heart) to relocate the party and their loot back to Endeavour (the ship). The world starts to fade around the party as they would expect, and then… doesn't. The party are still in the wreckage glade on Hive IV. The creatures are still closing in. No-one, on the ground or on Endeavour, is quite sure why this has happened. The party are forced to run.
Thanks to following Ninth Truth's directions, the party are at least not too far from their raft, having paralleled the coast and looped around. However, in their scramble through the forest, pursued by the many different creatures encountered so far, Warded Path is grievously wounded and dragged away, forcing the party to double back and retrieve her. It is a hard fight, but they eventually make it back onto the raft, get it out onto the Fifth Sea, and fend off further waves of aggressive sea creatures. The beach at the pentagonal facility is at least not immediately swarming with decaying Skulkers, and the party are able to head back through the gate to Kylal before anything else goes wrong.