Childhood in a Capsule

Lui Zi Tung, a domineering, capable, successful woman founded a cosmetics company. However, Ding Yau Ching a make-up influencer gave Zi Tung's brand a terrible review.
In an entanglement between the two, Zi Tung encounters an accident and loses all of her memories, except those from childhood. Her mind regressed back to a primary school student. Yau Chin was then coerced into helping her to recover her memory and other issues she faced.
However, Zi Tung's family fell into a crisis, and needs the original Zi Tung back. Will Lui Zi Tung gain back her memories or continue living with the mentality of a child?
(Source: Wikipedia, caseybruv at MDL)