After Cory teaches a lesson on truth, Riley and Maya struggle with whether or not it was right to lie to Farkle and tell him he’s a good actor and if Maya should keep the locket she found, even though it doesn't belong to her.
The Pines family is starting to get everything back to normal after the Lil' Gideon incident. They throw a “Mystery Shack Is Back” party, but some unwelcome guests intend to crash it.