Transmigrated to 1976: The Returned Fake Heiress

She wakes up in 1976 as the chubby imposter daughter just cast out by her wealthy family. But this transmigrator has a plan: armed with culinary talents and hidden medical knowledge, she'll carve her own path in this tumultuous era. When a brilliant mechanical engineer with serious clout crosses her path, sparks fly. From kitchen to clinic to becoming the most coveted security officer around, she's rewriting her destiny one skill at a time.