His chances of receiving a life-saving heart transplant thwarted when terrorists take over the hospital where the operation was scheduled to take place a frail Muay Thai student finds his odds of living lifted when his friends decide to take on the bad guys single-handedly Wun may be small but he packs a hearty punch And the same can be said for his friends too Now Wun is sick and he won&39;t survive unless he gets a new heart Incredibly Wun&39;s best friend discovers that a local hospital has just received a viable heart via organ donation But Won&39;s only got four hours to live and when terrorists storm the hospital it starts to look like all hope is lost Fortunately Won&39;s friends aren&39;t willing to let their pal die without a fight