It looks like a kalanchoe. I think the pot is too big for the plant. Be careful, do not water until it is almost dry. Do not put a saucer under the pot and make sure it is allowed to drain completely. Fertilize with liquid plant food once a month. Place plant in very bright light, a south facing window is good but not in direct sunlight since it is not used to that. They like to be warm around 85 degrees. Keeping them under a lamp will give them light and warm them up some.
Below is a link on caring for kalanchoe.
Happy gardening in Hawaii. Gardens are where people grow.