They find themselves in the path of a wavefront of grey goo, and Fitz surprises Trix by being quite keen to investigate the mystery.
ðeɪ fˈaɪnd ðɛmsˈɛlvz ɪnðə pˈæθ əvə wˈeɪvfɹʌnt ʌv ɡɹˈeɪ ɡˈuː, ænd fˈɪts sɚpɹˈaɪzᵻz tɹˈɪks baɪ bˌiːɪŋ kwˈaɪt kˈiːn tʊ ɪnvˈɛstᵻɡˌeɪt ðə mˈɪstɚɹi.