In 1775 during the Spanish colonial period in the Philippines, nuns attempts to survive the night after an unknown evil was set free in their cloister. Meanwhile in 2025, a group of friends attend a Halloween masquerade ball which was attacked by a serial killer. Fast forward to the future in 2050, a post-apocalytic Philippines is ruled by the aswang.

Part of Shake, Rattle & Roll Evil Origins. In 2050, a post-apocalyptic Philippines is ruled by the aswang.