Time Travel 2: The Azure Heart-shaped Pendant

A particle detector from another dimension is accidentally dropped into a lake, posing a challenge for its retrieval. Meanwhile, an incident leaves the team in need of medical attention, delaying their journey. During the search for the detector, a necklace with a blue heart-shaped pendant is found, leading to the appearance of a mysterious red-haired girl. The connection between the girl and the necklace becomes a central question in the unfolding story.