My Unfamiliar Family (2020)

S1E2 Dad is 22 Years Old

Eun Hee is taken aback when she unexpectedly encounters Jong Min during her team dinner, prompting her to act out of character. Seeking solace, she visits Chan Hyuk and unloads her emotional struggles onto him. At the same time, Sang Shik has vanished, leading the family to report him missing. Eventually, he is found in a hospital, but to their distress, he appears to have no memory of his children.