Object

Fusion Booster Element

Involved in critical sabotage by the Doctor to disable Omega's temporal plot

6 appearances

Appearances in the Narrative

When this object appears and how it's used

6 moments

Doctor secures fusion booster data from Damon

The fusion booster element, recently transported into the Citadel’s systems, becomes the central focus of the scene. Damon confirms its activation and details its unstable properties (hydrogen-fuelled, high conversion rate), while the Doctor extracts critical destination data directly tied to Omega’s scheme. This object’s properties and data become key to disrupting Omega’s immortality plans and anchor the Earth-bound rescue mission.

Before: Recently transported to Citadel computer systems, stored within power equipment infrastructure

After: Identified as hydrogen-fuelled with a precise destination towards Earth, its data core analyzed and utilized for tactical planning

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S20E3 · Arc of Infinity Part 3

Doctor reveals Earth destination and Tegan’s peril

The fusion booster element becomes the catalyst for the Doctor’s revelation of Tegan’s location. While fully seated in Gallifrey’s computer systems before being referenced, Damon’s recitation of its transportation details and hydrogen-fueled instability allows the Doctor to triangulate Omega’s presence. Its technical data thus transforms an obscure artifact into a navigational beacon.

Before: Located within Gallifrey’s Citadel computer systems as an inert data reference, under high-security monitoring by Time Lord authorities.

After: Still inert in systems, but now imbued with narrative significance as the Doctor leverages its transport logs to deduce Earth as the next battleground for Omega’s Matrix corruption.

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S20E3 · Arc of Infinity Part 3

Doctor uncovers President’s plot

The fusion booster element serves as the crucial clue linking the Doctor’s trap in the Matrix to the Lord President’s access codes. Damon identifies the booster as having been sent using these codes, turning a technical component into pivotal evidence of high treason within Gallifrey’s highest authority.

Before: Active in the confrontation, its origin and purpose newly clarified by Damon’s examination of the codes.

After: Still in the Computer Room, its significance now known but physical form unchanged.

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S20E3 · Arc of Infinity Part 3

Reinforcements converge in the computer room

The fusion booster element serves as the physical clue linking the Doctor's unauthorized activities in the computer room to the Lord President's direct involvement. Damon identifies the booster's transport codes as proof of the highest authority's complicity, deepening the conspiracy's reach and forcing immediate confrontation strategies.

Before: Identified as transported to Earth with temporal distortion masking its destination and origin

After: Confirmed as sent using the Lord President's codes, rendering the Doctor's actions indirectly traceable to Gallifrey's highest office

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S20E3 · Arc of Infinity Part 3

Doctor thanks Damon before departing

The fusion booster element’s discovery and analysis drive the event’s urgency, as Damon confirms its transport to Earth. Though not physically present in the room, it underpins the need for immediate action and frames the Lord President’s complicity.

Before: Hidden within data recovered during the investigation

After: Integrated into the narrative proof of the Time Lords’ involvement via codes

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S20E4 · Arc of Infinity Part 4

Doctor Nyssa fight Ergon in pump room

The Doctor’s improvised sabotaging device, cobbled from scavenged parts, is actively engaged against Omega’s fusion booster while he delivers his Amsterdam geography monologue, highlighting the improvised yet precise nature of his assault.

Before: Scuffed alloy casing with exposed wiring, held in the Doctor’s hands and clamped to the booster’s housing.

After: Temporarily abandoned during the Ergon struggle, reclaimed once the creature is neutralized and taken into the crypt.

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