Zombiefied (2012)

Friends Tommy and Angel have kept a deadly secret that has tormented them for 13 years. At a major concert for two popular bands, the fans inside the club strangely become rageful, vicious zombies. An outbreak occurs, leaving lead singer Alana running for her life and getting separated from her bandmates. Now Tommy and Angel must re-live their worst fears as their nightmares become reality and the zombie outbreak is spreading. During Alana's escape, she is attacked by a twisted serial killer who knows the secret and the bodies are adding up.