Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_18777 ( "Series Number" real, "Season Number" real, "Episode Title" text, "Premiere Date" text, "Production Code" real )

### Question ###
What number episode in the series is the episode 'things that fly'?

### Accurate SQL ###

SELECT MAX("Series Number") FROM table_18777 WHERE "Episode Title" = 'Things That Fly'