Kai, a merboy, loves to share hugs with his mother, but learns that some friends prefer fin bumps, tail claps, tentacle shakes, or claw pinches.

Oona the mermaid is friends with everyone, but when her attempts to befriend a shark with sensory issues fail miserably she realizes what may be fun for her may be overwhelming for him.

Kitty helps her best friend Unicorn accomplish his dream of being a mermaid, but despite an elaborate DIY mermaid tail, the friends' trip to the beach does not go as planned and Unicorn's insecurities ermerge.