Switching to cleaner energy can be daunting and it's particularly challenging in the largest petrochemical hub in Southeast Asia, Singapore. As the first in a two-part series, this documentary features people and enterprises that traditionally partner the oil & gas industry as they now pioneer groundbreaking projects that will enable more customers to refuel with cleaner transitional fuels such as biofuels and liquified natural gas (LNG). The story follows a team of homesick engineers from Singapore posted to the Keppel Nantong Shipyard in China to oversee the final commissioning and delivery of Singapore's first ever LNG bunkering vessel, the FueLNG Bellina. They must mitigate the twin challenges of LNG being a cryogenic liquid and having flammable vapours. In the field of biofuels, the programme features the people who support Neste's renewable diesel refinery in Singapore. It explores their ambitious expansion project to make tons of renewable jet fuel.