- The world of NICI unicorn Theodor and his friends is full of magic.
- When Theodor is on his way to catch some of the sweets that fly through unicorn-land, he often meets one or the other of his friends on the way. One of them is unicorn-girl Merry Heart.
- The pink unicorn is a bit shy and blushes quickly.
- But Merry Heart is also an attentive observer and very empathetic. She recognises the heart’s desires of other unicorns and is happy if she can give their luck a boost and make them happy.