Isabella and Marina were two extraordinary nine-year-old girls full of adventure. Their moms were twin sisters who got married to twin brothers! Right from childhood, they were brought up together in the same house as their fathers were business partners, and they all decided to live as a joint family. The two girls were best friends to each other and bonded well. They were always there for each other whether it was a bad day at school, seeking adventure in the postmidnight activities of a freaky neighbor, or going on an exotic vacation. They were called the fristers (best friends and sisters) by friends and families as they were always together.