My Mister, My Ahjusshi , Naui Ajeosshi , My Ajusshi , My Ahjussi
Park Dong Hoon, a middle-aged engineer, finds himself in a less-than-ideal situation. He's married to attorney Kang Yoon Hee, but his life is far from blissful. His two unemployed brothers, Sang Hoon and Gi Hoon, depend on him for support. To complicate matters further, his wife is engaged in a clandestine affair with CEO Do Joon Yeong, Dong Hoon's boss and former college junior. When Dong Hoon unexpectedly receives a bribe, he discovers that his co-worker Lee Ji An witnessed the incident. Ji An, a young part-time worker at Dong Hoon's company, struggles under the weight of debt and the responsibility of caring for her ailing grandmother. Dong Hoon becomes embroiled in his brothers' quest for financial stability and the internal power struggle within the company, all while unaware of CEO Joon Yeong's desire to oust him and Ji An's true allegiance.