Fishing fanatic Will Millard immerses himself in the strange and secret world of carp fishing. It is an obsessive sport and a profitable industry. Anglers spend days on end, guarding their rods on the side of ponds that have been heavily stocked with fish, ready to be caught time and time again. It is a world away from the river fishing Will learnt with his Grandad as a boy. But it is fast becoming the most popular form of fishing, drawing in youngsters and women to the sport, and Will wants to find out why. He heads straight to the water known to have the biggest carp in Wales, but this is no ordinary fishing spot. Carp anglers are willing to visit the strangest of places in order to catch an enormous fish. They sleep in tents by city centre ponds, medieval castles and industrial docks - anywhere they can to get the monster carp they crave. Will must join the ranks and throw himself fully into nights at the bank if he has any chance of beating his personal best. He begins to learn that for these anglers, carp fishing is providing more than just a bit catch. Will meets a 16-year-old angler in Caerphilly who believes that carp fishing has helped him keep him out of trouble, and attends a fishing competition that has brought together an unlikely set of compatriots – the Welsh ladies team and the English army. Will can’t help but me drawn into this world – but will he manage to break his personal best?