As Patrick and Maddie say "I do," the long-awaited showdown between con artists and FBI plays out, though it is unclear whose side Maddie is really on - or who will be victorious.
Niagara Falls is the backdrop as the Bumblers, Maddie, Max, Sally, and Sofia try to stay one step ahead of the Doctor in an attempt to ensure their freedom and make the score of a lifetime.
Enjoying their con-artist lifestyle Ezra, Richard and Jules close in on Maddie. Lenny Cohen cleans up the mess that Sally made. Maddie gets a new assignment.
Ezra, Richard and Jules visit Maddie's parents; Sally makes a discovery with dangerous consequences; as Maddie gets closer to Patrick, Lenny Cohen shows up to set things straight.
Ezra's Toby jug con leads to an unlikely encounter with an old flame. The Bumblers, Maddie, Max, and Sally set in motion their risky plan to take down the Doctor.
Friends and foes converge on the Bumblers as they hide out at Jules' remote family cabin. Maddie, Sally and Max finally reunite for a perilous new con.
The Bumblers don new identities under Maddie's tutelage, as they are in pursuit of the ring. Ezra forms an unlikely relationship with a toby jug collector; and Max and Sally try to dig up dirt from the doctor's past.
Ezra, Richard and Jules give Maddie some life-altering information. Maddie and Max hatch a plan to save their lives, but they need the bumblers' help. Maddie and Patrick talk marriage.
As the wedding near, Maddie struggles to keep everything on track. Ezra tries to make a deal with Patrick. Richard learns the art of the con from Max. Jules has an unexpected encounter.