DC Super Hero Girls: Journey of Harley Quinn

Journey of Harley Quinn is an American animated direct-to-video film based on the DC Super Hero Girls franchise, produced by Warner Bros. Animation. It is the second film in the DC Super Hero Girls franchise.

Synopsis
Harley Quinn accidentally fell down the stairs and dream she's traveling back in time, feeling as though her friends can never forgive her.

During her self-exile in the late 1950s, Harley meets Cillian, Lorcan and Lilly who are the last family members stand due to their family's murder by their enemy, Samantha Evil.

Now, as things begin to look grim, Harley with help from the triplets, must venture to stop Samantha from taking over the world before their time runs out.

Plot
The Movie begins with Wonder Woman (Grey Griffin), is awoken by a horn honking, which is revealed to be Harley Quinn (Tara Strong), celebrating her birthday. Wonder Woman's planning a surprise party for her. Poison Ivy (Tara Strong), is buying a birthday present for Harley.

Bumblebee (Teala Dunn), Katana (Stephanie Sheh) and Batgirl (Mae Whitman) are decorating the room for the Party while Supergirl, (Anais Fairweather) is delivering the cake with a help from Steve Trevor.

In the girl's bathroom, Harley's been thinking about her party while going to the toilet. She flushed the toilet and sees Wonder Woman. She told Harley that the Party's ready. When she arrived to the door where the party is, she stopped and thinks that Wonder Woman is planning on pulling a Water Bucket on the Door Prank. She begin to run back to the her dorm-room. But then, a Banana Peel makes her fell down the stairs and fainted.

Harley wakes up in the city's alley and read the newspaper where she's shocks that the year is 1959, December 19th. She discovers that She's in Japan instead of America and sees an factory not far from the Alley called the Darcy Factory, The Infamous Factory.