Cultural Shock: Urgent! I am being sued by my ISP...

Just to clarify: this person is not me.

Translation: 急！！！我被宽带网公司给起诉了。在线等！谢谢 from Wenxuecity

I received the following letter today

Court Case: Voltage Pictures(The Plaintiff)

Court: United States District Court District of Columbia

Copy Righted Work:xxx

It seems to be due to a movie I downloaded. The letter also came with a subpoena:

Production: You Are COMMANDED to produce at the time, date, and place set forth below the following documents, electronically stored information, or objects, and permit their inspection, copying,testing, or sampling of the materials:Pursuant to the attached order, provide the name, current address, email address and MAC address of all individuals whose IP addresses are listed in the attached spreadsheet

Place: xxxxxxx,Washington DC, Date and time: 10/20/2013

I have never seen anything like this!!! What does it mean?! Do I have to hire a lawyer? They gave me an objection deadline: Feb 11, 2011

This is an emergency. I am really nervous. They say that this is a Civil lawsuit and not criminal investigation, but I have never received such a letter before! Please help me make sense of it! Thank you all!

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In the comment section, the dude reveals that he used emule. On a separate note, VeryCD took down eD2k links to most of the TV series, movies, and music, to the great dismay of Emule users in China.