A turbine comprising: a turbine impeller; a housing disposed so as to enclose the turbine impeller, the housing including a scroll passage positioned on an outer circumferential side of the turbine impeller and an inner circumferential wall part defining an inner circumferential boundary of the scroll passage; a plurality of nozzle vanes disposed inside an intermediate flow passage which is positioned, in an exhaust gas flow direction, on a downstream side of the scroll passage and on an upstream side of the turbine impeller; a plate disposed on a side of the intermediate flow passage with respect to the inner circumferential wall part so as to face the intermediate flow passage such that a gap is formed between the plate and the inner circumferential wall part in an axial direction; and wherein the gap is in communication with the intermediate flow passage via the scroll passage, wherein the plate has at least one through hole through which the intermediate flow passage and the gap are communicated with each other, wherein the at least one through hole opens to a surface of the plate facing the intermediate flow passage, at a position on a radially outer side with respect to a suction surface of at least one of the plurality of nozzle vanes, wherein the at least one through hole opens to the surface of the plate at a position, in a circumferential direction, on an upstream side in the exhaust gas flow direction with respect to the rotation axis of the at least one nozzle vane, wherein the plurality of nozzle vanes is arranged in the circumferential direction inside the intermediate flow passage so as to be rotatable around the rotation axis extending along the axial direction, and wherein when an opening degree of each of the plurality of nozzle vanes is maximum, at least a part of the at least one through hole is positioned on a radially outer side with respect to the at least one nozzle vane, at the surface of the plate, characterized in that when an opening degree of each of the plurality of nozzle vanes is maximum, an opening of the at least one through hole on the surface of the plate is partially positioned on the radially outer side of the suction surface of the nozzle vane. a turbine impeller; a housing disposed so as to enclose the turbine impeller, the housing including a scroll passage positioned on an outer circumferential side of the turbine impeller and an inner circumferential wall part defining an inner circumferential boundary of the scroll passage; a plurality of nozzle vanes disposed inside an intermediate flow passage which is positioned, in an exhaust gas flow direction, on a downstream side of the scroll passage and on an upstream side of the turbine impeller; a plate disposed on a side of the intermediate flow passage with respect to the inner circumferential wall part so as to face the intermediate flow passage such that a gap is formed between the plate and the inner circumferential wall part in an axial direction; and wherein the gap is in communication with the intermediate flow passage via the scroll passage, wherein the plate has at least one through hole through which the intermediate flow passage and the gap are communicated with each other, wherein the at least one through hole opens to a surface of the plate facing the intermediate flow passage, at a position on a radially outer side with respect to a suction surface of at least one of the plurality of nozzle vanes, wherein the at least one through hole opens to the surface of the plate at a position, in a circumferential direction, on an upstream side in the exhaust gas flow direction with respect to the rotation axis of the at least one nozzle vane, wherein the plurality of nozzle vanes is arranged in the circumferential direction inside the intermediate flow passage so as to be rotatable around the rotation axis extending along the axial direction, and wherein when an opening degree of each of the plurality of nozzle vanes is maximum, at least a part of the at least one through hole is positioned on a radially outer side with respect to the at least one nozzle vane, at the surface of the plate, characterized in that when an opening degree of each of the plurality of nozzle vanes is maximum, an opening of the at least one through hole on the surface of the plate is partially positioned on the radially outer side of the suction surface of the nozzle vane.