Danny and Tucker have been best friends ever since and they have become inseparable, but their friendship is put to the test when Desiree, a wish granting ghost ends up being released and she senses Tucker's jealousy over being left out. Desiree grants Tucker ghost powers like Danny, but it comes at a price for Tucker when his jealousy towards Danny starts to manifest and he starts to play pranks on everyone at school. Danny soon learns from the seller that Desiree was a harem woman who fell in love with the Sultan and she was offered everything she wanted, but she got banished by the Sultan's jealous wife. Since then, Desiree has been granting everyone's wishes after dying from a broken heart. Danny tries to lure Desiree, but with no success. A man tries to make a wish at the fountain and Desiree appears. Danny is able to stop the wish granting ghost by putting her inside the Fenton Thermos. The next day, Danny goes to the hall of records and he sees Tucker changing his grades. Danny tries to warn Tucker about his powers but he transforms into a monster. During a long fight, Danny separates Tucker and his monster half. Tucker is reverted back to normal, he apologizes to Danny for letting his jealousy get to him and Danny apologizes to Tucker for his showboating, the two become friends again. However, Danny and Tucker end up getting sick and Sam has to nurse her two friends back to health.