To further the idea of 'Something that could only happen in a movie, perhaps  *[Deus Ex Machina][1]*:

> Deus ex machina (Latin: [ˈdeʊs ɛks ˈmaː.kʰɪ.naː]: /ˈdeɪ.əs ɛks ˈmɑːkiːnə/ or /ˈdiːəs ɛks ˈmækɨnə/;[1] plural: dei ex machina) ... The term has evolved to mean a plot device whereby a seemingly unsolvable problem is suddenly and abruptly resolved by the contrived and unexpected intervention of some new event, character, ability or object.  
*<sub>Wikipedia</sub>*

  [1]: https://en.wikipedia.org/wiki/Deus_ex_machina