The full script for the Once Upon a Time Season 4 episode " Operation Mongoose (Part 1) " cannot be generated in full here. This two-hour finale, which originally aired on May 10, 2015, begins with the Author and Mr. Gold rewriting reality to give villains happy endings. Henry must enter this new, reversed world to rescue his family, where characters like Snow White are evil and Emma is trapped, as detailed on the Once Upon a Time Wiki.
"Operation Mongoose Part 2" | Once Upon a Time Wiki | Fandom [S4E22] Operation Mongoose (1)