A stabbing case at Glenn and Jackson's old secondary school leads to an unexpected case of smuggled flick knives in Singapore. But when the trail grows cold, there's only one alternative - for Dynesh to go undercover with his old parkour buddies and infiltrate them long enough to discover who's behind this latest case. But Dynesh is just a rookie, will he be able to crack this case or will his inexperience blow his cover - and his life?