Joker sees Harleen deliberately fall toward the glowing chemical tank. Without hesitation, he jumps from the upper catwalk, dropping through the open space between the steel beams. He catches a lower platform mid-fall, swings across a gap, and keeps moving downward through the dark industrial structure. They reach the lower edge of the tank just in time—Harleen is already sinking beneath the surface of the glowing green chemicals. The strange liquid swirls around her, filled with a toxic energy that twists through the water like a living force. It is the same chemical mixture that will destroy the life she knew and transform Harleen Quinzel into Harley Quinn. Joker dives into the vat after her without hesitation. The chemicals burn around him as he pushes through the green haze, reaching for her. He grabs her and pulls her upward with desperate strength, dragging her back onto the edge of the platform as the machinery shakes and alarms echo through the factory. Harleen gasps for air, her eyes reflecting the eerie green glow. The chemicals drip from her hair and clothes as the transformation begins. Joker pulls her close, holding her tightly as the glowing liquid flickers behind them. For a moment, the chaos disappears. Surrounded by the green glow of the chemical that changed her forever, Joker looks at Harleen and kisses her, holding onto her as if he is afraid to lose her. The factory hums around them, and the world they knew fades away—the moment Harleen Quinzel becomes Harley Quinn.