Episode 4 of "Sunset X Vibes" finds us once again amidst the bustling office, where Lin suddenly succumbs to a faint. Meanwhile, Sun is entrenched in a crucial meeting, strategizing partnerships. Sam's urgent call disrupts the proceedings, prompting Sun to dispatch Chan to escort Lin to the exclusive executive first-aid room.
As Lin gradually regains consciousness, the interns flock back to their duties, reassured that their colleague's collapse stemmed merely from exhaustion. Chen, performing a routine check on Lin's vital signs, inadvertently collapses onto him, just as Pim and Yo arrive on the scene, mistaking the scene for something more than it was. Juladis, meanwhile, corners the interns in the hallway, their clever antics momentarily distracting him from uncovering the truth about Chan and Lin's secretive bond, wrongly assuming Chan to be the mysterious figure Lin has been exchanging messages with.
Refreshed and eager to resume work, Lin finds himself gently detained by Chan, who insists he take a little more time to recuperate. Sun's visit soon after alleviates the situation, entrusting Chan with Lin's care while offering the latter a tantalizing promise: a personal showing at his residence.
Word of Lin's unexpected sick leave spreads among the interns, igniting a desire to visit their ailing friend. However, they're reluctantly sent back to their desks, their visit postponed until lunchtime. On their return journey, their eyes widen in suspicion as they catch Chan acting peculiar, sparking a determination to unravel the enigmatic connection between him and Lin. Their sleuthing pays off when they spy Chan indulging in a tender moment with Juladis, their covert recording a testament to their investigative prowess.
Elsewhere, Lin, ensconced in Sun's sleek automobile, engages in a playful phone call with Pim and Yo, mischievously feigning slumber as his alibi. During a brief respite, Pim and Yo chance upon Sam engaged in hushed conversation with a colleague from another department. Sam's cryptic text inviting Yo to accompany him home, under the vague pretext of a neighborhood rendezvous, falls flat on cranky Yo's deaf ears. Instead, he opts to travel with Pim, subtly shunning Sam's advances.
At Sun's lavish abode, he leads Lin into a clandestine chamber adorned with exquisite jewelry, a testament to the ingenuity of his family's craftsmanship. Witnessing Lin's awestruck admiration, Sun harbors a secret hope that the young man might one day grace their company as a brilliant designer. As Sun excuses himself to prepare a cozy haven for Lin, the latter finds himself lingering over an antiquated box, intrigued.
Outside Yo's domicile, Sam paces anxiously, puzzled by Yo's recent evasiveness. Their private moment is abruptly interrupted by Yo's mother, prompting them to retreat to the tranquility of the bridge for their heart-to-heart. Yo remains guarded, yet Sam's perseverance shines through, declaring his unwavering desire to stand by Yo's side.
Back at Sun's residence, Lin cozies up in Sun's shirt, feeling a sense of belonging. However, his composure falters when Sun gently inquires about a kiss. Lin acquiesces, yet his eyes remain wide open, offering a tentative response. As they share their first kiss, Lin confesses his innocence in the art of affection, leaving Sun to embrace him warmly and usher him towards the comforts of their bed.
That evening, Lin's dreams are haunted by the elusive warrior once more, his face shrouded in mystery. The warrior leaves behind a delicate flower, which Lin awakens to find resting on his bedside table. Unsettled by the dream, Lin inquires about the flower's origin from Sun, who offers a perplexed shrug, unaware of the blooms gracing their garden. As they snuggle once more, the enigmatic flower gracefully floats away, carried by the breeze.
The following day, Pim and Yo eagerly confront Lin, demanding to know the identity of his mysterious companion. Yo, armed with a damning video, presses Lin to sever ties with Chan, accusing him of infidelity. Lin, however, clears the air regarding Chan, promising to reveal all later.
Amidst the hustle and bustle, Lin volunteers to run an errand for Prim. While awaiting his ride, he is subjected to an unwanted advance from a stranger. Meanwhile, Sam and Yo engage in a flirtatious text banter, their anticipation for Lin's return palpable. Lin's call from the police station disrupts their flirtation, and they quickly apprehend Juladis attempting to sneak away. Leveraging the video as leverage, they coerce him into leading them to the police station. Upon arrival, they find Lin unscathed, having bravely defended himself against the perpetrator and ensured his just deserts at the hands of the law.
As the others take a respite, Sun rushes in, his concern for Lin palpable as he tenderly caresses his face. This intimate gesture is abruptly exposed to the amused gazes of their peers, adding a touch of unexpected humor to the already charged atmosphere.
