The Brotherhood puts pressure on Patrice about the missing costume. He and Simon steal a costume from a Festival volunteer.

Simon and Patrice have to reassure the Brotherhood about the costume theft. Simon has to carry a large amount of money.

With the complicity of Bruno and Patrice, Simon develops a plan to get Caroline out of Francis' claws and neutralize the Brotherhood.

It's the famous day of the Festival ball: Simon and Patrice carry out the plan to save Caroline and expose the Brotherhood.