Indirect air-conditioning circuit for a motor vehicle comprising: • a first refrigerant fluid loop in which a refrigerant fluid flows, said first refrigerant fluid loop comprising in the direction of flow of the refrigerant fluid: ∘ a compressor, ∘ a first dual-fluid heat exchanger, ∘ a first expansion device, ∘ a first heat exchanger being intended to be passed through by an air flow inside the motor vehicle, ∘ a second expansion device, ∘ a second heat exchanger being intended to be passed through by an air flow outside the motor vehicle, and ∘ a first bypass duct of the second heat exchanger comprising a first stop valve, • a second heat-transfer fluid loop in which a heat-transfer fluid flows, and • the first dual-fluid heat exchanger being jointly arranged on the first refrigerant fluid loop downstream of the compressor, between said compressor and the first expansion device, and on the second heat-transfer fluid loop, so as to allow heat exchanges between the first refrigerant fluid loop and the second heat-transfer fluid loop, characterized in that said first refrigerant fluid loop also comprises • a first internal heat exchanger, allowing heat exchange between the high-pressure refrigerant fluid at the outlet of the first dual-fluid heat exchanger and the low-pressure refrigerant fluid at the outlet of the second heat exchanger or of the first bypass duct, • a second internal heat exchanger allowing heat exchange between the high-pressure refrigerant fluid at the outlet of the first internal heat exchanger and the low-pressure refrigerant fluid flowing in the first bypass duct, • a second bypass duct of the first expansion device and of the first heat exchanger, said second bypass duct comprising a third expansion device arranged upstream of a second dual-fluid heat exchanger also arranged jointly on a secondary thermal management loop. • a first refrigerant fluid loop in which a refrigerant fluid flows, said first refrigerant fluid loop comprising in the direction of flow of the refrigerant fluid: ∘ a compressor, ∘ a first dual-fluid heat exchanger, ∘ a first expansion device, ∘ a first heat exchanger being intended to be passed through by an air flow inside the motor vehicle, ∘ a second expansion device, ∘ a second heat exchanger being intended to be passed through by an air flow outside the motor vehicle, and ∘ a first bypass duct of the second heat exchanger comprising a first stop valve, ∘ a compressor, ∘ a first dual-fluid heat exchanger, ∘ a first expansion device, ∘ a first heat exchanger being intended to be passed through by an air flow inside the motor vehicle, ∘ a second expansion device, ∘ a second heat exchanger being intended to be passed through by an air flow outside the motor vehicle, and ∘ a first bypass duct of the second heat exchanger comprising a first stop valve, • a second heat-transfer fluid loop in which a heat-transfer fluid flows, and • the first dual-fluid heat exchanger being jointly arranged on the first refrigerant fluid loop downstream of the compressor, between said compressor and the first expansion device, and on the second heat-transfer fluid loop, so as to allow heat exchanges between the first refrigerant fluid loop and the second heat-transfer fluid loop, characterized in that said first refrigerant fluid loop also comprises • a first internal heat exchanger, allowing heat exchange between the high-pressure refrigerant fluid at the outlet of the first dual-fluid heat exchanger and the low-pressure refrigerant fluid at the outlet of the second heat exchanger or of the first bypass duct, • a second internal heat exchanger allowing heat exchange between the high-pressure refrigerant fluid at the outlet of the first internal heat exchanger and the low-pressure refrigerant fluid flowing in the first bypass duct, • a second bypass duct of the first expansion device and of the first heat exchanger, said second bypass duct comprising a third expansion device arranged upstream of a second dual-fluid heat exchanger also arranged jointly on a secondary thermal management loop.