Drowning in ambition but narratively adrift, Kim Byung-woo’s latest high-concept blockbuster opens with an apartment complex being consumed by a giant tsunami before morphing into a science-fiction thriller that defies simple explanation.

Kim’s filmography boasts a string of audacious genre-bending experiments, from The Terror Live to Omniscient Reader: The Prophecy. The Great Flood, which premiered last week at the 30th Busan International Film Festival, is an action-packed puzzle box that continues in a similar vein.

Read my South China Morning Post review