High Guardian Academy holds an annual tradition to send all first-years to a monster cave for their first adventure. The gang however goes more and more off-course trying to find the quest item.
- The Dividual: Rosemary correctly points out that Buckles are actually four twins by following one's shadow and figuring out how he does Offscreen Teleportation.
- Continuity Nod: Thyme asks if the Healing Spring can cure plants, alluding to The Corruption from earlier episodes, which she does use the water against at the end. It turns out her home forest has been suffering from it too for a while.
- Don't Celebrate Just Yet: The gang gets excited after defeating the diamond guards, but there's one problem. Their rubble blocks the exit and diamond is still indestructible.
- Healing Spring: The class is tasked to find a fountain of healing water, and there are several in the cave. It becomes more important to the main four when they fail to find one and Rosemary ends being stabbed.
- Heroic Comedic Sociopath: The team fighting giant trabers is surprizingly bloody considering the monsters are still cute critters, even if huge.
- Knight of Cerebus: Olive the Cat Girl has been spying on the heroes and reports to the Witch Country's superiors, who task her with the assassination of the four.
- Living Statue: After the gang finds healing water, two diamond statues come to live and attack them.
- Macro Zone: The fourth floor is a house where everything is so large the cast doesn't even reach chairs.
- Mood Whiplash: The gang rides a dragon out of the dungeon, who slowly starts withering away. When they land, only a skeleton remain. Once Parsley goes to check on it, it becomes a cheerful undead, flies away, explodes and becomes a star. Sage is very confused.
- Obviously Evil: Buckles has a Cheshire Cat Grin, frown eyebrows and an annoying giggle. Though he is just a mischevious floor guard.
- Parlor Games: As the gang gets stuck, they play Truth or Dare, resulting in each of the four becoming more open to each other.
- Riddle Me This: Buckles stops the party by making them identify the creature in the riddle.
- Rhymes on a Dime: Buckles talks in cryptic poems.
- Screw This, I'm Outta Here: Zinnia (the girl with the long blonde ponytail) decides call quits being a Guardian after the teachers emphasize the danger of going into the titular cave. Considering she's the same girl who gets her face nearly devoured by a carnivorous plant in Episode 5, this is hardly surprising.
- Surprisingly Realistic Outcome: Rosemary aims at the traber queen using a dangerous tactic. Not only killing the boss monster make the critters even angrier, she gets injured and passes out on the next floor, spending most of the episode being carried by Thyme.
- Watch Where You're Going!: As the diamond guardians immune to any weapon, the gangs baits the two to crush into each other, which destroys them.
- When You Coming Home, Dad?: Rosemary and Thyme tell that they're not okay with their missing mom and dad respectively.
- Whole Costume Reference: Buckles looks exactly like Link in The Legend of Zelda: Ocarina of Time.
