ðə dˈɑːktɚ ænd ˈeɪs ɪnvˈɛstᵻɡˌeɪt ɐ kɹˈɑːp sˈɜːkəl ɪnðə kˈɛntɪʃ kˈʌntɹɪsˌaɪd; ðeɪ ɑːɹ hˈɛlpt baɪ ɐ mˈæθs ˈɛkspɜːt, ɐ wˈɛbmˌæɡɐzˈiːn pˈʌblɪʃ ænd ðə dˈɑːktɚz fɹˈɛnd, ðə bɹˌɪɡɐdˈɪɹ.
The Doctor and Ace investigate a 'crop circle' in the Kentish countryside; they are helped by a maths expert, a web-magazine publish and the Doctor's friend, the Brigadier.