Friday Fantasy: Temple of the Forgotten Depths

Dreams of a beautiful dark-skinned woman asking to be returned to the ocean and a temple hidden within its depths. A local coastline being beset by deadly storms and attacks by monsters and spirits which rise from the deep. A scholar wanting to visit an ancient subaquatic site as part of his research and asking the adventurers to help him locate it. A strange bleaching is spreading along the coast, destroying ships, marking fish stocks, and spreading panic, and merchants want to hire some to determine the cause and put an end to it. An ancient, underwater temple is said to be home to a great jewel called the Ocean Jewel, said to grant great powers to the user when at sea or under the water. One, more, or all of these are reasons to visit the ‘Temple of the Forgotten Depths’, an ancient temple said to have collapsed into the sea decades ago and become a beacon for drowned souls and those who would turn upon any and all seafarers! They are also the hooks for Temple of Forgotten Depths.

Temple of the Forgotten Depths is an adventure written for use with ‘5E+’, so Dungeons & Dragons, Fifth Edition and Dungeons & Dragons 2024. It is a playtest adventure, the first, in an anthology of scenarios published by No Short Rests! called One Room One Shots. Each entry in the collection is a short adventure themed around a single room or structure and intended to be slotted readily into a campaign or more readily, played in a single session with either no preparation or preparation required beforehand. This might be because some of a group’s players are unable to attend; because they want to play, but not want to commit to a longer scenario or campaign; or because a group wants to introduce new players to the roleplaying game. Temple of the Forgotten Depths is written for a group of Player Characters of Fifth Level. The scenario has no other requirements beyond this and its setting, but knowledge of the Aquan language will be useful or any ability to speak other languages.

However they are drawn to the ‘Temple of the Forgotten Depths’, the Player Characters begin the encounter after having swum down from the surface, having imbibed a Potion of Water Breathing. However, once inside the temple, apart from certain locations, they will not need this as there is air. The temple is a giant dome constructed of stone and coral that is no longer as magnificent as it once was. This is due to the coral having been bleached through exposure to corruption and this bleaching has not only affected some of the inhabitants of the temple, it can also affect the Player Characters like a cosmetic curse. The location of the temple’s treasure, the Ocean Jewel is easy to discern, but getting to it is less obvious. Although they will receive some hints from an intriguing variant of the mermaid drawn from African mythology, the Player Character’ progress will be hampered by the temple itself corrupted as it is from dark influences and that dark influence’s attempts to stop them. Throughout the scenario there are some encounters with some nicely thematic monsters like the Drowned Ones, the spirits of those who died at sea, and the malign influence behind the temple’s corruption. In this, any Warlock should beware. Contact with this malign influence may result in the Warlock’s pact suddenly shifting, though this is not explored in the scenario.

Penultimately, the Player Characters will get within sight of the Ocean Jewel, but to get to it with any ease, they will need to solve three highly thematic and decent puzzles. This will enable access to the Ocean Jewel, but not before the threat at the heart of the scenario and the threat to the temple reveals itself. The climax of the scenario is a big boss fight against the Hydra of the Deep, a huge monstrosity with multiple Hit Points per head, its own Mythos Actions, which escalate into Legendary Actions if it loses two many heads! It is an appropriately challenging fight for both the environment and the scenario. Once the creature is defeated, the Player Characters can decide what to do with the Ocean Jewel. Several options are given for this and they are discussed in detail. Temple of the Forgotten Depths comes to a close with full stats and descriptions for all of its monsters and creatures and details of the magical items that can be found in the adventure.

However, one option not discussed in Temple of the Forgotten Depths in detail is what happens if a Warlock Player Character is forced into a Pact of the Deep through prolonged contact or another Player Character is affected by a Pact of the Deep. It is suggested that there is the possibility of such a pact turning that Player Character—Warlock or not—against the other Player Characters. These are only suggestions though and it would have been useful to have been given advice and mechanics on what has the potential to be an exciting turn of events.

Physically, Temple of the Forgotten Depths is well presented. It is lightly illustrated, but the artwork is excellent, and the maps of the temple are clear and easy to use. If there is an issue with Temple of the Forgotten Depths, it is that the text is small, making it a challenge to read!

Temple of the Forgotten Depths delivers a solid, enjoyably thematic scenario for a good session’s worth of play. It is presented as a playtest adventure, but in truth, Temple of the Forgotten Depths is ready to play, whether that is as a one-shot for an evening or an encounter for a campaign, and ready to play with a minimum of effort.