Wicked Young Master's Forceful Love: Training the Runaway Wife Season Two

A diary, a gold necklace, a childhood promise sealed for many years. Miss Nangong, the young lady of the Nangong family, conceals her identity and leaves the island in search of her childhood sweetheart. However, the other party doesn't remember their childhood events, even his name and identity have changed! What kind of conspiracy and shameful past is hidden behind all these?