When cyber-terrorists target the U.S. infrastructure over the July 4th weekend, the government asks Det. John McClane (Bruce Willis) to bring a skilled hacker (Justin Long) in for questioning. Sensing a threat to their plans, the bad guys kidnap McClane's daughter (Mary Elizabeth Winstead) for leverage, leading McClane to deliver his fourth "Yippee-ki-yay" with extreme, action-packed prejudice. Timothy Olyphant, Maggie Q co-star. PG13-rated version; 129 min./Unrated version; 129 min. Widescreen; Soundtracks: English DTS 5.1, Dolby Digital 5.1, French Dolby Digital Surround stereo, Spanish Dolby Digital Surround stereo; Subtitles: English, Spanish; audio commentary by Willis, others; behind-the-scenes footage; music video.