Brian and the Eeveelution Family meet Cinderella

Brian and the Eeveelution Family meet Cinderella is an upcoming Family Guy/Pokémon/Disney crossover to be created by Hiatt Grey.

Plot
Cinderella is living a dissatisfying life, having lost both parents at a young age, and being forced to work as a scullery maid for her cruel stepmother, Lady Tremaine, jealous of Cinderella's beauty, and stepsisters Drizella and Anastasia, in the dilapidated château they live in. Despite this, Cinderella is a kind and gentle young woman, and is friends with mice and birds that live in and around the château. Meanwhile, at the royal palace, the King is frustrated that his son, the Prince, is still unmarried. He and the Grand Duke organize a ball in an effort to find a suitable wife for the Prince, requesting every eligible maiden attend. Upon receiving notice of the ball, Tremaine agrees to let Cinderella go if she finishes her chores and can find a suitable dress to wear.

Cinderella finds a gown that belonged to her mother and decides to refashion it for the ball, but her step family impedes this by giving her extra chores. Cinderella's animal friends, including Jaq and Gus, refashion it for her, completing the design with a necklace and sash discarded by Drizella and Anastasia, respectively. When Cinderella comes downstairs wearing the dress, the stepsisters are upset when they realize Cinderella is wearing their accessories, and tear the dress to shreds before leaving for the ball with their mother. A heartbroken Cinderella storms out into the garden in tears, where her Fairy Godmother appears before her. Insisting that Cinderella goes to the ball, the Fairy Godmother magically transforms a pumpkin into a carriage, the mice into horses, Cinderella's horse, Major, into a coachman, and dog, Bruno, into a footman, before turning Cinderella's ruined dress into a white ball gown and her shoes into glass slippers. As Cinderella leaves for the ball, the Fairy Godmother warns her the spell will break at the stroke of midnight.

At the ball, the Prince rejects every girl until he sees Cinderella, who agrees to dance with him, unaware of who he is. The two fall in love and go out for a stroll together in the castle gardens. As they are about to kiss, Cinderella hears the clock start to chime midnight and flees. As she leaves the castle, one of her slippers falls off. The palace guards give chase as Cinderella flees in the coach before the spell breaks on the last stroke of midnight. Cinderella, her pets, and the mice hide in a wooded area as the guards pass.

The Grand Duke informs the King that Cinderella, who remains anonymous, has escaped, and that the Prince wishes to marry her. The lost glass slipper is the only piece of evidence. The King issues a royal proclamation ordering every maiden in the kingdom to try on the slipper for size in an effort to find the girl. After this news reaches Cinderella's household, Tremaine realizes her stepdaughter is that girl when hearing her humming the waltz played at the ball and locks her in her attic bedroom. Later, the Duke arrives at the château, and Jaq and Gus steal the key from Tremaine's dress pocket and take it up to the attic as Anastasia and Drizella unsuccessfully try on the slipper. Tremaine's cat, Lucifer, ambushes the mice, but Bruno chases him out of the house, allowing the mice to free Cinderella. As the Duke is about to leave, Cinderella appears and asks to try on the slipper. Knowing it will fit, Lady Tremaine trips the footman as he brings the Duke the slipper, causing it to shatter on the floor. Much to her horror, Cinderella presents the Duke with the other slipper, which fits perfectly. The film ends with a now-married Prince and Cinderella at their wedding, sharing a kiss as they leave.

Trivia

 * The Griffin Family, Vinny Griffin, Glenn Quagmire, Cleveland Brown, and Joe Swanson guest star in this film.
 * After this adventure, Cinderella joins the team.
 * The storyline continues in Brian and the Eeveelution Family's Adventures of Cinderella II: Dreams Come True.