Interpersonal Conflict
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The Botanical Obsession

Harrison Chase's obsessive pursuit of botanical dominance through unethical experimentation creates escalating threats to human life and ecological balance. The Third Doctor, Sarah Jane Smith, and UNIT's Felix Keeler must stop Chase and his henchman Scorby before their dangerous botanical experiments cause irreversible harm. Chase's single-minded obsession with plant supremacy drives him to create threats that endanger all human life, making him a unique antagonist whose motivation is neither power nor wealth but botanical purity taken to a murderous extreme.

3 events across 1 season