Twins Ali and Tulip have always been around hospitals thanks to their surgeon mother, learning bits of first aid and medical knowledge along the way. When their mother starts acting strangely — becoming unusually sleepy and forgetful — the twins grow worried.They suspect her new boyfriend may be involved. With help from their mystery-solving grandmother, Ali and Tulip set out to uncover the truth. Their journey involves medical sleuthing, ethical choices, humour, and danger, as they try to “cure the crime.”