Plot Analysis Summary
Mystery Inc. investigates the Justice League's disappearance, exposes competing villainous schemes, and helps Krypto restore Metropolis.
Story Structure — 5 Plot Phases
The Vanished League
Lois Lane and Jimmy Olsen investigate the Hall of Justice after the Justice League disappears. A phantom drives them away, bringing Mystery Inc. into the case.
Key Events
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Justice League Disappears — The Justice League has mysteriously disappeared from Metropolis. Characters: Computer / Joker / Superman, Daphne Blake / Wonder Woman
Location: Metropolis
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Lois Investigates The Hall — Lois and Jimmy investigate the deserted Hall of Justice. Characters: Helen / Lois Lane / Harley Quinn, Jimmy Olsen / Rex Ruthor (voice)
Location: Hall of Justice
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Phantom Chase — A phantom chases Lois and Jimmy out of the building. Characters: Helen / Lois Lane / Harley Quinn, Jimmy Olsen / Rex Ruthor (voice)
Location: Hall of Justice
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Mystery Inc. Gets The Call — Lois calls Mystery Inc. for help with the phantom mystery. Characters: Helen / Lois Lane / Harley Quinn, Scooby-Doo / Fred Jones, Daphne Blake / Wonder Woman
Location: Metropolis
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Villains Overrun Metropolis — The gang discovers that villains have overrun the city after the League vanished. Characters: Scooby-Doo / Fred Jones, Daphne Blake / Wonder Woman, Helen / Lois Lane / Harley Quinn, Computer / Joker / Superman
Location: Metropolis
Trapped In The Hall
The gang reaches a Metropolis overrun by villains and meets Lex Luthor and Mercy. A phantom triggers a lockdown, while Krypto emerges as an unexpected ally.
Key Events
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Daily Planet Briefing — Lois and Jimmy explain the disappearance and city crisis to the gang. Characters: Scooby-Doo / Fred Jones, Daphne Blake / Wonder Woman, Helen / Lois Lane / Harley Quinn, Jimmy Olsen / Rex Ruthor (voice), Solomon Grundy / Perry White
Location: Daily Planet
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Hall Of Justice Tour — The gang tours the Hall and meets Luthor, Mercy, and Rex. Characters: Scooby-Doo / Fred Jones, Daphne Blake / Wonder Woman, Helen / Lois Lane / Harley Quinn, Jimmy Olsen / Rex Ruthor (voice), Mercy, Lex Luthor
Location: Hall of Justice
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Phantom Triggers Lockdown — A phantom appears, and a mysterious superpowered dog locks down the building. Characters: Scooby-Doo / Fred Jones, Daphne Blake / Wonder Woman, Mercy, Lex Luthor
Location: Hall of Justice
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Krypto Is Introduced — Luthor identifies the superpowered dog as Krypto, Superman's pet. Characters: Scooby-Doo / Fred Jones, Mercy, Lex Luthor
Location: Hall of Justice
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Krypto Bonds With Scooby — Krypto quickly becomes friends with Scooby during the investigation. Characters: Scooby-Doo / Fred Jones
Location: Hall of Justice
Holograms And Pursuit
An accidental kitchen activation produces Legion of Doom holograms. The gang finds footage of the League's disappearance, but Solomon Grundy's intrusion turns the investigation into a chase.
Key Events
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Kitchen Holograms Activate — Scooby and the gang accidentally activate holograms of the Legion of Doom. Characters: Scooby-Doo / Fred Jones, Computer / Joker / Superman
Location: Hall of Justice Kitchen
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Holograms Are Shut Down — The gang distracts the holograms while Krypto shuts down the malfunctioning panel. Characters: Scooby-Doo / Fred Jones
Location: Hall of Justice Kitchen
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Disappearance Footage Found — The gang finds footage showing the moment the Justice League disappeared. Characters: Scooby-Doo / Fred Jones, Daphne Blake / Wonder Woman, Computer / Joker / Superman
Location: Hall of Justice
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Grundy Infiltrates The Hall — Solomon Grundy appears inside the building and launches a long chase. Characters: Scooby-Doo / Fred Jones, Daphne Blake / Wonder Woman, Solomon Grundy / Perry White
Location: Hall of Justice
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Grundy Vanishes — Grundy suddenly disappears in a flash of light, deepening the mystery. Characters: Scooby-Doo / Fred Jones, Solomon Grundy / Perry White
Location: Hall of Justice
Mercy's Hidden Scheme
The gang discovers that Mercy used the Phantom Zone Projector to imprison the Justice League. Before the mystery can be closed, Luthor exposes his larger plan and seizes control.
Key Events
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Grundy Vanishes — Grundy suddenly disappears in a flash of light, deepening the mystery. Characters: Scooby-Doo / Fred Jones, Solomon Grundy / Perry White
Location: Hall of Justice
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Mercy's Phantom Scheme — The gang learns Mercy trapped the League to claim the Hall for herself. Characters: Scooby-Doo / Fred Jones, Daphne Blake / Wonder Woman, Mercy, Computer / Joker / Superman
Location: Hall of Justice
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Luthor Hijacks The Plan — Luthor reveals he knew Mercy's plan and intends to rule Metropolis with robots. Characters: Mercy, Lex Luthor, Scooby-Doo / Fred Jones
Location: Hall of Justice
Krypto's Final Stand
Rex is revealed as a robot and battles Krypto over the projector. Krypto wins, imprisons the robot army, and frees the League and Solomon Grundy.
Key Events
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Rex Reveals His Robot Form — Rex is exposed as a robot and battles Krypto for the projector. Characters: Jimmy Olsen / Rex Ruthor (voice), Scooby-Doo / Fred Jones, Lex Luthor
Location: Hall of Justice
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Krypto Defeats Rex — Despite Rex's Kryptonite advantage, Krypto wins the fight for the projector. Characters: Jimmy Olsen / Rex Ruthor (voice), Scooby-Doo / Fred Jones, Lex Luthor
Location: Hall of Justice
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League Freed From The Zone — Krypto uses the projector to trap the robots and free the Justice League and Grundy. Characters: Scooby-Doo / Fred Jones, Daphne Blake / Wonder Woman, Computer / Joker / Superman, Solomon Grundy / Perry White
Location: Hall of Justice
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Villains Are Arrested — Luthor and Mercy are arrested after their schemes are exposed. Characters: Mercy, Lex Luthor, Scooby-Doo / Fred Jones, Daphne Blake / Wonder Woman
Location: Metropolis
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The Mystery Closes — Clark is recognized as Superman, Jimmy ends his claimed romance, and Scooby shares a snack with Flash. Characters: Scooby-Doo / Fred Jones, Daphne Blake / Wonder Woman, Jimmy Olsen / Rex Ruthor (voice), Computer / Joker / Superman
Location: Metropolis