Impulsive Excessive Disorder

This episode marks the beginning of Interlude II. "Bart, listen to me. Nobody is perfect. You are. That is not true. Yes it is. You knew when to come back here. You got the flash drive. You even helped Grandpa Joe and Grammy Cecile. You... Yeah, you're perfect. I'm a complete failure. No... No, you're not. I failed a lot too."

- Bart Allen and Nora West-Allen

Synopsis
Picking up where season 7 left off, after returning home from a visit for their parent's vow renewal, Bart and Nora quickly realize that things are not exactly as they left them. The duo race to repair any fissures in the timeline and restore everything back to the way it is supposed to be.

Main Characters

 * Impulse (Bart Allen)
 * XS (Nora West-Allen)
 * Team Flash
 * Barry Allen
 * Iris West-Allen
 * Caitlin Show
 * Cecile Horton
 * Frost
 * Allegra Garcia
 * Chester P. Runk
 * Jay Garrick
 * Central City Police Department
 * Joe West
 * Eddie Thawne
 * Avery

Villains

 * Godspeed Army
 * Godspeed
 * Trickster
 * Zoom
 * Eobard Thawne
 * Sterling Brooks
 * Royal Flush Gang
 * Queen (Mona Taylor)
 * King
 * Ten (Wanda Wayland)
 * Jack (Jake Foh)
 * Lex Luthor

Other Characters

 * Cisco Ramon
 * Joan Williams
 * Gideon
 * Rose
 * Jesse Quick
 * The Atom
 * Firestorm
 * Newspaper
 * Jess Bebe
 * Vanessa O'Grady
 * Anthony Bellows Jr.
 * Abraham Froman
 * Anthony Bellows
 * Elizabeth Gutierrez
 * Mike
 * Morgan Harvey
 * Norman Yates
 * Athena Baros
 * Bruce Manthis
 * Fisk Ciney
 * Central City Police Department
 * Daisy Korber
 * Hawkshaw
 * Fred Chyre
 * Cecile Horton's Ex-Husband
 * Hendrik Lorentz
 * Henri Poincaré
 * Sophus Lie
 * Elon Musk
 * Mason Bridge
 * Isaac
 * Francine West
 * McFly
 * Kid Flash
 * Mark Blaine
 * Marcus
 * God
 * Nora Allen (Speed Force)
 * Judge Hankerson

Teams and Organizations

 * Team Flash
 * Big Belly Burger
 * CC Jitters
 * Godspeed Army
 * S.T.A.R. Labs
 * Flash Museum
 * Central City Weekly News
 * CCND
 * CC Daily
 * Central Gazette
 * Mornings in Central City
 * The Central Chronicle
 * National Free Press
 * Central City Explorer
 * Central City High School
 * Central City Diamonds
 * Starling City Rockets
 * Harrison's Jewelers
 * Central City Police Department
 * Fast Track Labs
 * Central City Pay Parking
 * O'Shaughnessy's
 * Royal Flush Gang
 * Utopia Casino
 * Central City Picture News
 * Central City Hospital
 * Channel 52
 * Nazis
 * Central City Sharks

Events

 * Godspeed War
 * Assault on Central City
 * Massacre at the Central City Police Precinct
 * S.T.A.R. Labs Particle Accelerator Explosion
 * Robbery of Harrison's Jewelers
 * Fixed Points
 * Robbery of Utopia Casino
 * The Singularity
 * World War II
 * Armageddon

Species

 * Metahumans
 * Humans
 * Metahumans (Earth-2)
 * Humans (Earth-2)
 * A.I.
 * Angels

Objects

 * Time Aberrations
 * Temporal Wormholes
 * The Flash Suit
 * Helmet
 * Time Wave
 * Godspeed Suits
 * XS Suit
 * Gauntlet
 * Holograms
 * Impulse Suit
 * The Flash Suit
 * PED
 * Cosmic Treadmill
 * Jesse Quick Suit
 * ATOM Exosuit
 * Firestorm Suit
 * Quantum Splicer
 * Kid Flash Suit
 * Mecha-Vibe Suit
 * Gauntlets
 * Goggles
 * Frost Suit

Locations

 * Earth-Prime
 * Earth
 * United States of America
 * Missouri
 * Central City
 * West House
 * Big Belly Burger
 * CC Jitters
 * West-Allen Loft
 * Fontana Drive
 * S.T.A.R. Labs Central City Facility
 * Flash Museum
 * S.T.A.R. Labs Particle Accelerator
 * Central City High School
 * City Hall/DA's Office
 * Ethan Avenue
 * Harrison's Jewelers
 * Central City Police Precinct
 * Fast Track Labs
 * Utopia Casino
 * Central City Art Gallery
 * Central City Hospital
 * Keystone City
 * O'Shaughnessy's
 * Washington, D.C.
 * White House
 * Starling City
 * Milan
 * La Verità Rustica
 * Tibet
 * Paris
 * Forces of Nature
 * Speed Force
 * Earth-2
 * Hell

Trivia

 * The majority of the episode takes place on December 31, 2013, and during the midnight of January 1, 2014. The ending, however, takes place on January 1, 2022.