Basic Sandwich

Dean Pelton narrates a video about Russell Borchert and his hidden vault.

The study group discusses the blueprints and plans to find Borchert's hidden vault.

The group searches the school for the hidden stairwell and finds a clue.

The group finds a hidden room but it seems empty, leading to disappointment.

The group finds a trapdoor while school board members arrive to stop them.

The group enters the lost section of Greendale from the 1970s.

Abed explains to Annie that the group's actions are like a TV show ending.

The group searches the lost section but finds only odd items.

The group uses a jukebox to open a secret door to Borchert's lab.

The group finds Borchert alive in his lab with his gold and machine.

Richie and Carl confront the group, but Jeff uses a mind trick on them.

Borchert explains his life in the lab and his attachment to a computer named Raquel.

Jeff gives a speech about respecting others' dreams, convincing Borchert to give them money.

Chang reveals he is working with Subway and traps the group.

Chang damages Raquel, trapping the group in the lab.

Borchert explains his computer responds to emotions, and realizes the internet has made his work obsolete.

The group uses passion to restart Raquel and escape the lab.

The group stops the Subway sale by revealing Borchert as vice dean.

The city councilman warns the school is still in danger, but the group remains optimistic.

Characters resolve their storylines and Chang gets a job on the school board.

The group says goodbye and hints at future adventures.

The end tag features a montage of fake movie titles.