Episode 9 of "Pump Up the Healthy Love" kicks off with Mi-ran stepping into her home, radiating an unusually cheerful aura. She's elated because, for the first time, she restrained herself from an embarrassing revelation. She confides in Ji-ran and Kang Dan, admitting her feelings for Hyeon-joong. Mi-ran shares that she caught a glimpse of him and Kang Sol exiting a hotel together, and she's grateful she hadn't confessed her feelings beforehand. Moreover, she doubts the viability of a relationship with Hyeon-joong due to his intense fitness obsession. Mi-ran feels a sense of relief, knowing she spared herself from potential heartache by never initiating anything with Hyeon-joong.
However, Mi-ran's joyful demeanor takes a sudden turn when she spots Hyeon-joong coaching Kang Sol at the gym. She also encounters Roy and inquiries about his relationship status with Sol, to which he confirms they're dating. Sol then pulls Roy aside and quizzes him about why he's not training at his own facility.
Later, Sol invites Mi-ran out for coffee, an invitation she hesitantly accepts. Over their drinks, Mi-ran brings up the sight of Sol and Hyeon-joong at the hotel. Sol clarifies that it was for a film shoot.
A flashback unfolds, revealing Hyeon-joong entering the hotel room and informing Sol that she couldn't have his body. To Mi-ran's surprise, it was all part of a fitness content shoot. After wrapping up, Sol confesses she's feeling under the weather and none of the other trainers wanted to assist her. She desperately needs Hyeon-joong's help to overcome her illness.
The following day, Ji-ran notices Mi-ran wearing makeup as she prepares to head to the gym. Mi-ran explains the situation regarding the video and dashes off to the gym, eager to impress Hyeon-joong. While working out, Mi-ran finds herself increasingly worried about her appearance during her session with Hyeon-joong. Her distractions grow so intense that she ends up throwing a weight, accidentally shattering a mirror.
Rosa and Alex engage in a discourse about the impending necessity to shut down the gym for repairs. Hyeon-joong, sensing an opportunity, prompts Mi-ran to organize an overnight fitness retreat for the gym and its enthusiastic members. Taking heed of her supervisor's counsel, Mi-ran opts for a serene locale by the sea.
On the fateful day of the retreat, Hyeon-joong is astonishment personified as he beholds everyone adorned in stylish attire. His delight knows no bounds upon seeing Mi-ran clad in chic fitness gear, though Sol undeniably steals the limelight with her radiant presence. Meanwhile, Kang Dan's subtle distance from Ji-ran does not go unnoticed by her keen eyes.
As they embark on their journey via bus, Sol confides in Mi-ran, acknowledging her feelings for Hyeon-joong and offering her unwavering support. Upon arrival, Ji-ran confronts Dan about his changed demeanor, to which he responds evasively. The fitness training session commences with high spirits!
Mi-ran attempts to forge a deeper connection with Hyeon-joong, but three meddlesome gym-goers redirect their efforts, aiming to play Cupid between Hyeon-joong and Sol instead. Intrigued, Mi-ran proposes a lively game of Truth or Dare Squats. She inquisitively asks Hyeon-joong about his relationship status with Sol, prompting Sol to reluctantly admit their past as a couple, but emphasizing that their current bond is platonic. Ji-ran, curious, wonders aloud why Sol chose an ex-lover as their trainer. Just as the conversation takes a turn, Kang Dan abruptly interrupts, suggesting to Ji-ran that perhaps it's time for them to part ways.
The remainder of the group shifts gears, heading to a karaoke bar for some vocal festivities. Mi-ran suddenly succumbs to a stomach ache, and Rosa, ever the considerate one, offers Sol's digestive medications. Despite Sol's protests, Mi-ran consumes them nonetheless. In a moment of revelation, Sol confesses that the pills are actually narcotic pain relievers.
Mi-ran suddenly fainted, prompting Hyeon-joong to scoop her up onto his back and dash towards the hospital with urgent strides. As he hurried along, Sol rang through, revealing that the pills Mi-ran had consumed were merely digestive aids. Mi-ran stirred from her slumber, murmuring that the shock had merely caused her dizziness. She then noticed Hyeon-joong's bare feet, attempting in vain to carry him. Ultimately, Hyeon-joong donned Mi-ran's shoes and bore her back to their camp with unwavering determination.
Later, Mi-ran engaged in a heartfelt conversation with Sol, who confessed her own ill health. Worried, she pondered whether her admirers would still hold her in high esteem if they learned of her ailment. Sol then confided in Mi-ran her desire to take body profile photos, seeking her encouragement and support.
Upon returning to the city, Mi-ran and Sol trained alongside Hyeon-joong in preparation for the photo shoot. At one instance, Ji-ran approached Sol, holding a copy of her book, "Never A Sad Ending," and asked for her autograph. Ji-ran expressed her frustration over Dan ignoring her calls, but Sol reassured her with the promise of a joyous conclusion.
On the day of the shoot, Sol apologized to Hyeon-joong for ending their relationship just before his critical competition. Fortunately, the photo session proved to be a resounding success! The narrative then leaps forward three months, where Alex and Hyeon-joong are seen distributing fliers. Hyeon-joong receives a startling message that disrupts his routine.
The epilogue of Pump Up the Healthy Love Episode 9 captures Sol observing Hyeon-joong and Mi-ran playfully interacting as they run along the beach, their laughter echoing against the waves.
