Tabitha, Jughead, and Pop watch Alice's TV show. She has Percival Pickens as her guest; he has plans to shut down the diner and turn it into a railway station. He wants to build a railway through the town.

Tabitha confronts Percival in his office. She refuses to shut down the diner and sell him the diner. Percival's powers don't work on Tabitha.

Archie, Betty, and Toni refuse to help Tabitha fight against Percival. Veronica agrees to help, but she recommends Tabitha sell and open a new shop. Cheryl will help when her fire powers are under control.

Kevin reports to Percival that Tabitha is having a hard time getting supporters.

Jughead slips up by answering one of Tabitha's inner thoughts. He reveals his mind-reading powers to her and all the other powers in town.

Jughead gives Tabitha the idea to classify the diner as a historic landmark. Tabitha and Jughead search through old files and photos for any evidence.

An armed gunman enters the diner and shoots.

Tabitha wakes up as a waitress in 1944; she assumes the role of Teresa. She spots her guardian angel (in the form of Jughead) who informs her of the time travel. Raphael has returned; he tells her that Tabitha is on life-support in the present.

Tabitha reads Raphael's book and discovers she's "Chronokinetic." She has the power to time travel; it's a power gifted after the explosion. She needs to find an important totem that will help her return to the present, but Raphael tells her she has a "mission" for being in this time.

During the town meeting, Sheriff Perkins wants to turn Riverdale into a "sundown town." The rules would be to remove all black people from town after sundown. Archie's, Sheriff Keller's, and Alice's descendants are at the town meeting.

Tabitha thinks her reason for being in 1944 is to stop Sheriff Pickens from succeeding with the sundown town. A couple with a baby (played by Fangs and Toni) need shelter from the diner as they were caught in Centerville after hours.

Tabitha and Tidus Tate refuse to let Sheriff Pickens enter the diner without a warrant. Sheriff Pickens demands to get the couple from within the diner.

Tabitha convinces Raphael to use his true appearance to drive Sheriff Pickens and his deputy insane. Raphael uses his powers, which causes Sheriff Pickens to go erratic.

Tabitha takes Tracy and Flynn to the mayor to show how being in a sundown town would ruin the town. The mayor decides against being a sundown town.

Sheriff Pickens barges into the diner and shoots "Teresa."

Tabitha wakes up on April 3, 1968 as "Tina;" she wants to use her newfound powers to save Martin Luther King Jr. The bus breaks down and Raphael tells her that she can't get involved to change things. 

Percival Pickens' doppelganger is working at the FBI station in Riverdale.

Raphael states certain events can't be changed in history since they impacted the world. Pop Tate is upset over the news of the death; Tabitha convinces him to keep the diner open after the recent events.

Agent Pickens demands people at the diner go home as part of a new town decree. He says he will start arresting people by sundown.

The people within the diner want to protest and start rioting, but Tabitha convinces them to keep their lives going peacefully. Tabitha also blackmails J. Edgar Hoover, the head of the FBI, to muzzle Agent Pierce (the doppelganger of Percival Pickens).

J. Edgar Hoover shuts down the mission and fires Agent Pierce.

Tabitha discovers a bomb in the kitchen of the diner. Tabitha wakes up as "Tessa" in 1999. Sheriff Keller caught a vandal who spraypainted the diner and caused a hate crime. Brian, the spraypainter, doesn't remember anything; he was brainwashed by Percival Pickens.

Brian got a very rare baseball card from a curiosity shop at the edge of town. The shop's owner is Paul Prince.

Tabitha breaks into the curiosity shop to take photos. Raphael goes through the photos and discovers the holy grail at Paul Prince's shop.

Paul Prince says he is "Legion" and the darkness. Tabitha fights him with swords, but he disappears after fighting.

The holy grail is used with a milkshake to bring Tabitha back to her present timeline.

Tabitha stops the gunman by throwing a heavy item at his head. Tabitha tells Jughead the truth about her time-travel powers. Tabitha thinks Percival is the personification of evil and is doing what he can to destroy the town.

Tabitha believes the diner is her talisman for traveling through time. Tabitha traveled to the future and discovered that Riverdale became a wasteland.