No it's not!
I'm going into my PDF files to find a D&D module with a plot-hook <looks in folder> - here's one, H3 Pyramid of Shadows.
Page 4 has, on the left hand side, an Adventure Synopsis:
Karavakos desperately wants to escape from the Pyramid of Shadows. . . . Karavakos has been sending visions of the pyramid, its location in the natural world, and promises of power associated with the pyramid. The adventure begins when the player characters encounter the pyramid and are drawn into its timeless depths. From that point on, Karavakos
encourages the adventurers to destroy the splinters of his life force so that the power each possesses returns to him. With his power fully restored, Karavakos plans to perform arcane rituals that will set him free. . . . Presenting herself as an ally, Vyrellis guides the adventurers toward the Sanctuary of Light and urges them to destroy Karavakos—all of the splintered versions of him as well as the true wizard—and
win their freedom in the process.
Over the course of the adventure, the player characters explore the bizarre halls and chambers of the Pyramid of Shadows, fight its hostile inhabitants (including the splinters of Karavakos’s life force), collect the three keys needed to open the Sanctuary of Light, and finally face the true Karavakos in a pitched battle—with death or eternal imprisonment the price of failure. Along the way, Vyrellis also guides them to collect the splinters of her life force from the gemstones that hold them in hopes of restoring herself once she is freed from the pyramid.
That's a plot, with NPC with pre-authored motivations and plans.
And the right hand side of p 4 has some Adventure Hooks:
If the adventurers experienced the events of H2: Thunderspire Labyrinth, then they discovered a map among Paldemar’s possessions.
The map shows a glowing pyramid within a lush forest . . .
OR
Wherever the adventurers happen to be prior to the start of this adventure, a local wizard, scholar, or sage has been troubled by strange and compelling visions every night when he or she sleeps and dreams. In these dream visions, the tiefling wizard Karavakos appears to the dreaming mage and whispers about the power and secrets waiting within the Pyramid of Shadows. . . . The local wizard or sage is intrigued by the visions and anxious to claim the promised power. He or she is also suspicious of these dreams, and as frightened by the implications as he or she is desirous to fulfill the impulse to follow the dream.
Hearing of the exploits of the adventurers, or perhaps knowing them as friends or colleagues or acquaintances, the wizard/scholar/sage asks them to look into this matter.
There are some more like this on p 5.
The episode I described from my Burning Wheel session has nothing in common with this. There is no hook into the GM's pre-authored adventure. There is a series of action declarations by
me, the player, for my PC and his sidekick, and the GM responds to those as the rules and principles of the game call for.
Going in, neither of us knows anything about Rufus beyond what was in my PC backstory:
Thurgon’s father is deceased, but his mother Xanthippe (now 61 years old) still lives on the estate. So does his older brother Rufus (40 years old)., the 9th Count of Adir (although for the past 66 years that title has counted for little, having been usurped by others). . . . Although Auxol is now owned by servants of evil, the family continues to manage it. Xanthippe ensures that the estate serves as a bolthole for refugees. Rufus is sympathetic to their plight, but sees them ultimately as someone else’s problem. His interests are more mundane (it is fairly common knowledge that he has a 3 year old illegitimate son with a middle class townswoman).
Coming out, we now know that
Rufus is serving 'the master', who needs wine and that
Rufus is ashamed and that
Thurgon and Aramina could not snap him out of his shame, nor cow him into giving them some coin.
There is nothing like the structure of
plot and
plot-hook. This goes all the way back to
@chaochou's post upthread: