After the whirlwind adventure that was their last case, the Aces Club members are back and ready to tackle a brand new mystery! Three interns in their mid-twenties are found dead at a renowned paediatric speciality hospital, and the police are baffled with no evidence of foul play. With the clock ticking with each passing day, the brilliant members of the Aces Club are challenged once again to unravel the truth behind the deaths!