Story Structure — 5 Plot Phases
A Birthday and a Stolen Formula
Chad is bullied on his way to school, while experimental formulas are stolen from a government laboratory. At home, his birthday chemistry set brings the stolen substances into his life.
Key Events
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Birthday Walk to School — Sophie walks with Chad and wishes him well on his birthday. Characters: Chad, Sophie
Location: Walk to school
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Schoolyard Bullying — Josh and Kevin mock Chad and knock his books down. Characters: Chad, Josh, Kevin
Location: School
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Experimental Formulas — Laboratory workers handle two experimental formulas.
Location: Government laboratory
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Formulas Are Stolen — The experimental formulas are stolen and later end up in a child's chemistry set.
Location: Government laboratory
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Chad's Birthday Gifts — Ned gives Chad a chemistry set as the family celebrates his birthday. Characters: Chad, Ned, Aunt Ida
Location: Chad's home
Abner's Impossible Change
Chad mixes the chemistry-set contents, and Abner tastes the mixture. The dog turns invisible and gains the ability to speak and greater intelligence, though the invisibility is unreliable.
Key Events
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Abner Tastes the Mixture — Chad mixes chemistry-set contents while Abner watches and tastes the mixture. Characters: Chad
Location: Chad's home
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Abner Turns Invisible — Abner turns invisible, astonishing Chad; the effect later proves unreliable. Characters: Chad
Location: Chad's home
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Abner Speaks and Learns — Chad and Abner discover the dog can speak and has become more intelligent. Characters: Chad
Location: Chad's home
The Kidnappers Close In
The thieves learn Abner consumed the formulas and plan to take him for blood analysis. Abner overhears them and helps Chad evade their attempts, including their disguise as cable workers.
Key Events
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Thieves Learn the Truth — The men behind the theft learn that Abner consumed the formulas.
Location: Unspecified
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A Plan to Take Abner — The thieves plan to take Abner so their boss can analyze his blood.
Location: Unspecified
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Abner Overhears the Scheme — Abner overhears the kidnappers' scheme and helps Chad evade them. Characters: Chad
Location: Chad's home
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Invisible Evasion — Abner uses invisibility to confuse and frustrate the would-be kidnappers. Characters: Chad
Location: Chad's home
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Cable Worker Disguise — Chad and Abner realize the men have disguised themselves as cable workers. Characters: Chad
Location: Near Chad's home
A Lead at the Laboratory
Jackie and a government director investigate the missing formulas. A clerk's recollection gives Jackie an address, bringing the investigation and danger toward Chad's home.
Key Events
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Laboratory Investigation — Jackie and a government director investigate the missing formulas. Characters: Jackie
Location: Government laboratory
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The Clerk's Lead — The clerk recalls two men arguing over a chemistry set, giving Jackie an address. Characters: Jackie, Clerk
Location: Store
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Danger Reaches Home — The investigation's trail brings danger to Chad's home. Characters: Chad, Jackie
Location: Chad's home
Sophie as Leverage
The kidnappers seize Sophie and demand that Chad trade Abner for her. Chad apologizes, Sophie asks what is happening, and the available account leaves the proposed exchange unresolved.
Key Events
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Sophie Is Seized — The kidnappers seize Sophie to lure Chad out and demand Abner in exchange. Characters: Sophie, Chad
Location: Chad's home
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Unresolved Exchange — Chad apologizes to Sophie; she asks what is happening as the exchange remains unresolved. Characters: Chad, Sophie
Location: Unspecified