The only goal of this review is to explore spiritual themes and messaging in Mr. Plankton. I'm not analyzing on any other level, so if that's your thing, let's get into it.
The story begins with the fulfillment of two curses, previously spoken by the leads over each other at the end of a very unpleasant breakup. Jae Mi tells Hae Jo that he'll die alone in the street and Hae Jo tells Jae Mi that she'll never be a mother. Unseen, the forces of darkness leap to bring about the circumstances necessary to enact these words and several years later, on the same day, in the same hospital, Hae Jo is diagnosed with a terminal case of tangled blood vessels in his brain, and Jae Mi is told she's entered premature menopause.
Hae Jo is the more intuitive of the two and seems to understand that the road to redemption is through Jae Mi, so he kidnaps her from her wedding. Her wedding is a farce, a play where everyone is playing their part no matter how ridiculous. Jae Mi has no real self-esteem and has built a house of cards with her fiancé that will come crashing down the moment his family realizes she's not pregnant nor likely to be in the future. Hae Jo recognizes that she is not being honest with herself because of her desperation for family. What he doesn't recognize is that his own repeated abandonment of Jae Mi is a different reaction to the same desperation.
A series of adventures begins in which Hae Jo looks for his father and drags Jae Mi along with him. The story bounces back and forth between outrageous shenanigans and moments of genuine connection and soulfulness. In a particularly moving scene, Jae Mi asks Hae Jo to sing her a song. "You were made to receive the greatest love. You'll feel it in every part of your life." He sings life over her. Not an exact reversal of the original curse but powerful nonetheless.
Later in the story, when Hae Jo has flatlined once and seems near to death, Jae Mi decides to sneak his unconscious body out of the hospital. It's completely ridiculous, but in a moment of desperation she finally tells him she doesn't want him to die. She pulls back a corner of the curse blanketing him and he awakens. She buys him some time.
Unfortunately for this story, and the swollen eyed writer of this review, neither Hae Jo no Jae Mi ever fully understand the power of their own tongues. Reversing a curse requires repeated application over a period of time and so we're left with a story of limited redemption and a pretty heart wrenching ending. Here's hoping that radical, destiny changing, curse reversing redemption becomes increasingly common in future endeavors in storytelling in Kdramaland.