Limit of Love: Umizaru

A small team of Coast Guard divers, including Daisuke, rappels onto the ship from a helicopter and begins to evacuate the panicked passengers. Then Daisuke finds a familiar face - Kanna. They had a tiff the night before about their wedding plans - Kanna had already made her dress, while Daisuke was still reluctant to propose - and she left for Tokyo, feeling like a fool. Now she see Daisuke in a different, more heroic light - but before they can properly reconcile, she has to evacuate, while Daisuke searches for stray passengers. He finds two - a pregnant woman (Ohtsuka Nene) and an excitable man (Fukikoshi Mitsuru) who reluctant to leave his expensive foreign car. Through a series of mishaps, Daisuke, his pal and fellow diver Tetsuya (Sato Ryuta), and the two passengers end up trapped on the ship, as the water seeps in from below and the flames roar above. The Coast Guard swings into action to save this quartet, but despite the presence of dozens of Guardsmen, the rescue operation does not go smoothly. Who can save them? (Source: Asian Wiki)