The titular Dad'X (aka Santa Claus) and his team – elves Gadget, Gouly, Love-Love and Cruck, reindeer Swamollo, and a fairy named Princess – aid children and animals in need all over the world. However, the wicked Striker schemes to ruin their plans, ultimately seeking to replace Dad'X and reclaim the toy factory he was kicked out of.

Ce nouveau père-noël est drôle, maladroit, surprenant mais surtout catastrophique. Hors de l'époque festive, il vole en Robin des Bois au secours des enfants qui l'appellent. Or, il doit également se méfier de son ennemi terrible, le cruel Foudror.